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Monti F, Barišić S, Cannarella S, Ćiković D, Tutiš V, Kralj J, Catoni C. Breeding phase and outcome determine space use in European rollers Coracias garrulus prior to migration. Curr Zool 2024; 70:137-149. [PMID: 38726250 PMCID: PMC11078049 DOI: 10.1093/cz/zoad006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 02/21/2023] [Indexed: 05/12/2024] Open
Abstract
The breeding period is a demanding and time-constrained phase for migratory bird species. Breeding outcome and duration can interact with the extent and duration of post-breeding movements, resulting in individual differences in space use ultimately influencing later stages of the annual cycle. We present space-use and home range estimates during the breeding season for 21 European rollers Coracias garrulus tracked between 2018 and 2022, in Italy and Croatia. Using high-resolution spatial GPS data coupled with regular nest-box monitoring, we analyzed differences in space use during the incubation/nestling period versus post-breeding period prior to migration, accounting for the breeding outcome (successful vs. failure). We found that adult movements were strongly reduced during the first phase, whereas increased in the post-breeding phase, especially for failed breeders. Successful breeders remained in the surroundings of the nest site, whereas unsuccessful ones tended to abandon the nest and visit distant areas (up to 500 km) for long periods (60.5 ± 6.2 days). Breeding outcome did not influence the departure date of autumn migration, suggesting that failed breeders used this period for exploratory movements but not for advancing the onset of migration. Such exploratory movements may be functional to prospect and inform settlement decisions in failed breeders in search of new breeding opportunities and may be particularly important in migratory species, which generally have a limited period to gather information prior to autumn migration. The study demonstrates the need to investigate seasonal movements in different populations and the potential importance of prospecting post-breeding movements for long-distance migratory species.
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Affiliation(s)
- Flavio Monti
- University of Siena, Department of Physical Sciences, Earth and Environment, Via Mattioli 4, 53100 Siena, Italy
- Ornis italica, Piazza Crati 15, 00199 Rome, Italy
| | - Sanja Barišić
- Institute of Ornithology, Croatian Academy of Sciences and Arts, Gundulićeva 24, HR-1000 Zagreb, Croatia
| | | | - Davor Ćiković
- Institute of Ornithology, Croatian Academy of Sciences and Arts, Gundulićeva 24, HR-1000 Zagreb, Croatia
| | - Vesna Tutiš
- Institute of Ornithology, Croatian Academy of Sciences and Arts, Gundulićeva 24, HR-1000 Zagreb, Croatia
| | - Jelena Kralj
- Institute of Ornithology, Croatian Academy of Sciences and Arts, Gundulićeva 24, HR-1000 Zagreb, Croatia
| | - Carlo Catoni
- Ornis italica, Piazza Crati 15, 00199 Rome, Italy
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Lathouwers M, Artois T, Dendoncker N, Beenaerts N, Conway G, Henderson I, Kowalczyk C, Davaasuren B, Bayrgur S, Shewring M, Cross T, Ulenaers E, Liechti F, Evens R. Rush or relax: migration tactics of a nocturnal insectivore in response to ecological barriers. Sci Rep 2022; 12:4964. [PMID: 35322145 PMCID: PMC8943004 DOI: 10.1038/s41598-022-09106-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/15/2022] [Indexed: 12/02/2022] Open
Abstract
During their annual migration, avian migrants alternate stopover periods, for refuelling, with migratory flight bouts. We hypothesise that European Nightjars (Caprimulgus europaeus) adapt their daily migration tactics in association with biomes. We tracked the autumn migration of 24 European Nightjars, from breeding populations in Mongolia, Belgium and UK, using GPS-loggers and multi-sensor data loggers. We quantified crepuscular and nocturnal migration and foraging probabilities, as well as daily travel speed and flight altitude during active migration in response to biomes. Nightjars adopt a rush tactic, reflected in high daily travel speed, flight altitude and high migration probabilities at dusk and at night, when travelling through ecological barriers. Migration is slower in semi-open, hospitable biomes. This is reflected in high foraging probabilities at dusk, lower daily travel speed and lower migration probabilities at dusk. Our study shows how nightjars switch migration tactics during autumn migration, and suggest nightjars alternate between feeding and short migratory flight bouts within the same night when travelling through suitable habitats. How this may affect individuals’ fuel stores and whether different biomes provide refuelling opportunities en route remains to be investigated, to understand how future land-use change may affect migration patterns and survival probabilities.
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Affiliation(s)
- Michiel Lathouwers
- Research Group: Zoology, Biodiversity and Toxicology, Centre for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan, Gebouw D, 3590, Diepenbeek, Belgium. .,Department of Geography, Institute of Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, 5000, Namur, Belgium.
| | - Tom Artois
- Research Group: Zoology, Biodiversity and Toxicology, Centre for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan, Gebouw D, 3590, Diepenbeek, Belgium
| | - Nicolas Dendoncker
- Department of Geography, Institute of Life, Earth and Environment (ILEE), University of Namur, Rue de Bruxelles 61, 5000, Namur, Belgium
| | - Natalie Beenaerts
- Research Group: Zoology, Biodiversity and Toxicology, Centre for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan, Gebouw D, 3590, Diepenbeek, Belgium
| | - Greg Conway
- British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, UK
| | - Ian Henderson
- British Trust for Ornithology, The Nunnery, Thetford, Norfolk, IP24 2PU, UK
| | - Céline Kowalczyk
- Research Group: Zoology, Biodiversity and Toxicology, Centre for Environmental Sciences, Hasselt University, Campus Diepenbeek, Agoralaan, Gebouw D, 3590, Diepenbeek, Belgium
| | | | - Soddelgerekh Bayrgur
- Department of Biology, Mongolian National University of Education, Ulaanbaatar, Mongolia
| | - Mike Shewring
- School of Biosciences, Cardiff University, Cardiff, UK.,MPS Ecology, Heol y Cyw, Bridgend, UK
| | | | - Eddy Ulenaers
- Agentschap Natuur en Bos, Regio Noord-Limburg, Herman Teirlinck Havenlaan 88 bus 75, 1000, Brussels, Belgium
| | - Felix Liechti
- Swiss Ornithological Institute, Seerose 1, 6204, Sempach, Switzerland
| | - Ruben Evens
- Max Planck Institute for Ornithology, Eberhard-Gwinner-Straße, 82319, Seewiesen, Germany.,Department of Biology, Behavioural Ecology and Ecophysiology, University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium
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3
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Geographical variation in pace-of-life in a long-distance migratory bird: implications for population management. Oecologia 2021; 197:167-178. [PMID: 34459984 DOI: 10.1007/s00442-021-05012-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/03/2021] [Indexed: 10/20/2022]
Abstract
Life-history theory predicts that animals should develop adaptive trade-offs between survival and reproduction to maximize their fitness. This results in a continuum of life-history strategies among species, ranging from slow to fast paces-of-life. The optimal pace-of-life has been shown to vary within environmental gradients, with a commonly observed pattern of a slow-to-fast continuum from the tropics to the poles. Within species, pace-of-life variability has however received much less attention. In this study, we investigated whether or not the pace-of-life of populations within a species follows the expected slow-fast continuum associated with latitude. We analysed the variability of life-history strategies among populations of the European roller Coracias garrulus, a long-distance migratory species, comparing breeding parameters and adult survival between populations across a latitudinal gradient. The findings showed a negative correlation between survival and clutch size in roller populations, with a slower pace-of-life in the northern populations and a faster pace-of-life in the southern populations: a reverse gradient to what might be expected from inter-specific studies. These results suggest that northern populations would benefit from measures enhancing adult survival probability, such as reduction in harvesting rates, while southern populations would respond better to actions favouring reproductive success, such as nesting site provisioning. This study highlights that life-history traits can vary substantially between populations of a single species with a large latitudinal breeding range, and pinpoint how knowledge about this variability may be key in anticipating different populations' responses to threats as well as to conservation strategies.
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Palomar AM, Veiga J, Portillo A, Santibáñez S, Václav R, Santibáñez P, Oteo JA, Valera F. Novel Genotypes of Nidicolous Argas Ticks and Their Associated Microorganisms From Spain. Front Vet Sci 2021; 8:637837. [PMID: 33855055 PMCID: PMC8039128 DOI: 10.3389/fvets.2021.637837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/24/2021] [Indexed: 12/01/2022] Open
Abstract
The knowledge of the distribution, richness and epidemiological importance of soft ticks of the genus Argas is incomplete. In Spain, five Argas species have been recorded, including three ornitophilic nidicolous ticks, but their associated microorganisms remain unknown. This study aimed to investigate ticks from bird nests and their microorganisms. Ticks were collected extensively from natural cavities and nest-boxes used by European rollers (Coracias garrulus) and little owls (Athene noctua) in Southeastern and Central Spain. Ticks were morphologically and genetically identified and corresponding DNA/RNA tick extracts were analyzed [individually (n = 150) or pooled (n = 43)] using specific PCR assays for bacteria (Anaplasmataceae, Bartonella, Borrelia, Coxiella/Rickettsiella, and Rickettsia spp.), viruses (Flaviviruses, Orthonairoviruses, and Phenuiviruses), and protozoa (Babesia/Theileria spp.). Six Argas genotypes were identified, of which only those of Argas reflexus (n = 8) were identified to the species level. Two other genotypes were closely related to each other and to Argas vulgaris (n = 83) and Argas polonicus (n = 33), respectively. These two species have not been previously reported from Western Europe. Two additional genotypes (n = 4) clustered with Argas persicus, previously reported in Spain. The remaining genotype (n = 22) showed low sequence identity with any Argas species, being most similar to the African Argas africolumbae. The microbiological screening revealed infection with a rickettsial strain belonging to Rickettsia fournieri and Candidatus Rickettsia vini group in 74.7% of ticks, mainly comprising ticks genetically related to A. vulgaris and A. polonicus. Other tick endosymbionts belonging to Coxiella, Francisella and Rickettsiella species were detected in ten, one and one tick pools, respectively. In addition, one Babesia genotype, closely related to avian Babesia species, was found in one tick pool. Lastly, Anaplasmataceae, Bartonella, Borrelia, and viruses were not detected. In conclusion, five novel Argas genotypes and their associated microorganisms with unproven pathogenicity are reported for Spain. The re-use of nests between and within years by different bird species appears to be ideal for the transmission of tick-borne microorganisms in cavity-nesting birds of semiarid areas. Further work should be performed to clarify the taxonomy and the potential role of soft Argas ticks and their microorganisms in the epidemiology of zoonoses.
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Affiliation(s)
- Ana M Palomar
- Centre of Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Jesús Veiga
- Departamento de Ecología Funcional y Evolutiva, Estación Experimental de Zonas Áridas -Consejo Superior de Investigaciones Científicas (EEZA-CSIC), Ctra. de Sacramento s/n, La Cañada de San Urbano, Almería, Spain
| | - Aránzazu Portillo
- Centre of Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Sonia Santibáñez
- Centre of Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Radovan Václav
- Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Paula Santibáñez
- Centre of Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - José A Oteo
- Centre of Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Francisco Valera
- Departamento de Ecología Funcional y Evolutiva, Estación Experimental de Zonas Áridas -Consejo Superior de Investigaciones Científicas (EEZA-CSIC), Ctra. de Sacramento s/n, La Cañada de San Urbano, Almería, Spain
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5
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Briedis M, Bauer S, Adamík P, Alves JA, Costa JS, Emmenegger T, Gustafsson L, Koleček J, Liechti F, Meier CM, Procházka P, Hahn S. A full annual perspective on sex-biased migration timing in long-distance migratory birds. Proc Biol Sci 2019; 286:20182821. [PMID: 30963841 PMCID: PMC6408886 DOI: 10.1098/rspb.2018.2821] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 01/29/2019] [Indexed: 11/12/2022] Open
Abstract
In many taxa, the most common form of sex-biased migration timing is protandry-the earlier arrival of males at breeding areas. Here we test this concept across the annual cycle of long-distance migratory birds. Using more than 350 migration tracks of small-bodied trans-Saharan migrants, we quantify differences in male and female migration schedules and test for proximate determinants of sex-specific timing. In autumn, males started migration about 2 days earlier, but this difference did not carry over to arrival at the non-breeding sites. In spring, males on average departed from the African non-breeding sites about 3 days earlier and reached breeding sites ca 4 days ahead of females. A cross-species comparison revealed large variation in the level of protandry and protogyny across the annual cycle. While we found tight links between individual timing of departure and arrival within each migration season, only for males the timing of spring migration was linked to the timing of previous autumn migration. In conclusion, our results demonstrate that protandry is not exclusively a reproductive strategy but rather occurs year-round and the two main proximate determinants for the magnitude of sex-biased arrival times in autumn and spring are sex-specific differences in departure timing and migration duration.
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Affiliation(s)
- Martins Briedis
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Silke Bauer
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Peter Adamík
- Department of Zoology, Palacký University, Olomouc, Czech Republic
- Museum of Natural History, Olomouc, Czech Republic
| | - José A. Alves
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
- South Iceland Research Centre, University of Iceland, Laugarvatn, Iceland
| | - Joana S. Costa
- Department of Biology and Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal
| | - Tamara Emmenegger
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Lars Gustafsson
- Department of Animal Ecology/Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Jaroslav Koleček
- Institute of Vertebrate Biology, The Czech Academy of Sciences, Brno, Czech Republic
| | - Felix Liechti
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Christoph M. Meier
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
| | - Petr Procházka
- Institute of Vertebrate Biology, The Czech Academy of Sciences, Brno, Czech Republic
| | - Steffen Hahn
- Department of Bird Migration, Swiss Ornithological Institute, Sempach, Switzerland
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Migration behavior and performance of the great spotted cuckoo (Clamator glandarius). PLoS One 2019; 14:e0208436. [PMID: 30608941 PMCID: PMC6319774 DOI: 10.1371/journal.pone.0208436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/06/2018] [Indexed: 11/18/2022] Open
Abstract
The study of brood parasitism has traditionally been focused on the breeding period, but recent evidence suggests that it urgently needs a new spatio-temporal perspective to explore novel avenues on brood parasite-host co-evolutionary interactions. Many brood parasites are migrants, but their ecology outside their short breeding season is poorly known. The great spotted cuckoo (Clamator glandarius) is one of the classical models in the study of brood parasitism, however, there is very little information on its migratory strategy, route and wintering grounds. Furthermore, there is no previous information on the geographical distribution of mortality and its causes in this species; information that is critical to understand the fluctuations in cuckoo populations and detect potential conservation risks. Using satellite tracking technology, we provide novel insight into the migratory behavior and performance of the great spotted cuckoo. We found individuals from southern Spain to be long-distance nocturnal migrants that use the East Atlantic Flyway for both post and pre-breeding migration, and that winter in the western Sahel. We found evidence of individual variation in their migration route, particularly regarding their post-breeding behavior in Spain. Our study also suggests that the south of Morocco is the most dangerous area due to a large number of deaths during the post-breeding migratory period. Furthermore, we found that natural predation seems to be the main cause of death, probably due to raptors, although human activities (i.e. hunting) could also played a role in the southern Mediterranean shore. Our study offers novel findings and challenges traditional ideas on the ecology of this species providing a good example of how the new spatio-temporal perspective can expand our knowledge on brood parasites.
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Schmaljohann H. The start of migration correlates with arrival timing, and the total speed of migration increases with migration distance in migratory songbirds: a cross-continental analysis. MOVEMENT ECOLOGY 2019; 7:25. [PMID: 31417677 PMCID: PMC6689889 DOI: 10.1186/s40462-019-0169-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/19/2019] [Indexed: 05/16/2023]
Abstract
BACKGROUND Anthropogenic changes in the climate and environment have globally affected ecological processes such that the spatiotemporal occurrence of the main annual cycle events (i.e., breeding, wintering, moulting, and migration) has shifted in migratory birds. Variation in arrival timing at migratory destinations can be proximately caused by an altered start of migration, total migration distance, and/or total speed of migration. Quantifying the relative contributions of these causes is important because this will indicate the mechanisms whereby birds could potentially adjust their annual cycle in response to global change. However, we have relatively little quantitative information about how each of these factors contributes to variation in arrival timing. My main aims are to estimate how arrival timing is correlated with variation in the start of migration and the total migration distance and how the total speed of migration may change with the total migration distance and body mass in a comprehensive analysis including multiple species. METHODS For this purpose, I considered individual tracks covering complete migrations from multiple species and distinguished between within- and between-species effects. RESULTS Assuming that the within- and between-species effects quantified under this approach agree with the effects acting at the individual level, starting migration one day later or increasing the total migration distance by 1000 km would result in later arrival timing by 0.4-0.8 days or 2-5 days, respectively. The generality with which the start of migration is correlated with arrival timing within species suggests that this is the general biological mechanism regulating arrival timing, rather than the total migration distance. The total speed of migration was positively correlated with the total migration distance but not with the bird's body mass. CONCLUSIONS As the start of migration is endogenously controlled and/or affected by hatching date, directional selection can probably act on existing within-species/within-population variation to alter arrival timing. This factor and the importance of variation in the start of migration for arrival timing suggest that migratory species/populations in which there is sufficient variation in the start of migration and transgenerational processes affect the corresponding timing may present an advantage over others in coping with anthropogenic-induced global changes.
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Affiliation(s)
- Heiko Schmaljohann
- Faculty of Biology/Environmental Sciences, University Oldenburg, 26111 Oldenburg, Germany
- Institute of Avian Research “Vogelwarte Helgoland”, An der Vogelwarte 21, 26386 Wilhelmshaven, Germany
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Actogram analysis of free-flying migratory birds: new perspectives based on acceleration logging. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2017; 203:543-564. [PMID: 28343237 PMCID: PMC5522517 DOI: 10.1007/s00359-017-1165-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 11/24/2022]
Abstract
The use of accelerometers has become an important part of biologging techniques for large-sized birds with accelerometer data providing information about flight mode, wing-beat pattern, behaviour and energy expenditure. Such data show that birds using much energy-saving soaring/gliding flight like frigatebirds and swifts can stay airborne without landing for several months. Successful accelerometer studies have recently been conducted also for free-flying small songbirds during their entire annual cycle. Here we review the principles and possibilities for accelerometer studies in bird migration. We use the first annual actograms (for red-backed shrike Lanius collurio) to explore new analyses and insights that become possible with accelerometer data. Actogram data allow precise estimates of numbers of flights, flight durations as well as departure/landing times during the annual cycle. Annual and diurnal rhythms of migratory flights, as well as prolonged nocturnal flights across desert barriers are illustrated. The shifting balance between flight, rest and different intensities of activity throughout the year as revealed by actogram data can be used to analyse exertion levels during different phases of the life cycle. Accelerometer recording of the annual activity patterns of individual birds will open up a new dimension in bird migration research.
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Bravo SP, Cueto VR, Gorosito CA. Migratory timing, rate, routes and wintering areas of White-crested Elaenia (Elaenia albiceps chilensis), a key seed disperser for Patagonian forest regeneration. PLoS One 2017; 12:e0170188. [PMID: 28182628 PMCID: PMC5300243 DOI: 10.1371/journal.pone.0170188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 12/30/2016] [Indexed: 11/19/2022] Open
Abstract
Migratory animals often play key ecological roles within the communities they visit throughout their annual journeys. As a consequence of the links between biomes mediated by migrants, changes in one biome could affect remote areas in unpredictable ways. Migratory routes and timing of most Neotropical austral migrants, which breed at south temperate latitudes of South America and overwinter closer to or within tropical latitudes of South America, have yet to be described in detail. As a result, our understanding about how these birds provide links between South American biomes is almost non-existent. White-crested Elaenia (Elaenia albiceps chilensis) is a long-distance austral migrant that breeds in the Patagonian Forest biome and overwinters in tropical South America. Because this small flycatcher plays a key role in the regeneration of this ecosystem, our objective was to describe the annual cycle of White-crested elaenias to evaluate the degree of migratory connectivity between breeding and wintering areas and therefore to determine if there are specific biomes of northern South America linked by elaenias to Patagonian forests. Fifteen individuals were successfully tracked throughout a complete migration cycle using miniature light-level geolocators. All individuals resided and moved through the same general regions. During fall (March-April-May), elaenias were located in the Caatinga and the Atlantic Forest biomes, from Rio de Janeiro to the region near Salvador da Bahia, Brazil. During winter (June-July-Aug.), birds were located further inland, within the Cerrado biome. Birds used three different routes during fall migration. Our results indicate that some individuals use a direct route, flying between 500–600 km/day, crossing desert and grasslands, while others took a detour, flying 100–200 km/day through forested areas with refueling opportunities. All birds used the Yunga forest during spring migration, with ten out of 15 individuals showing a clear counterclockwise loop trajectories throughout their annual cycle. None of the elaenias passed through Amazonia, traveled to western South America or crossed the Equator. Eleanias exhibited a high migratory connectivity between breeding area in Patagonian Forests and winter areas, Atlantic Forest and Cerrado. Our results suggest that Patagonian Forests could be strongly impacted by changes in those biomes or in the Yungas.
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Affiliation(s)
- Susana Patricia Bravo
- CIEMEP. Centro de Investigación Esquel de Montaña y Estepa Patagónica, CONICET/UNPSJB, Esquel, Chubut, Argentina
- * E-mail:
| | - Victor Rodolfo Cueto
- CIEMEP. Centro de Investigación Esquel de Montaña y Estepa Patagónica, CONICET/UNPSJB, Esquel, Chubut, Argentina
| | - Cristian Andrés Gorosito
- CIEMEP. Centro de Investigación Esquel de Montaña y Estepa Patagónica, CONICET/UNPSJB, Esquel, Chubut, Argentina
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Finch T, Dunning J, Kiss O, Račinskis E, Schwartz T, Sniauksta L, Szekeres O, Tokody B, Franco A, Butler SJ. Insights into the migration of the European Roller from ring recoveries. JOURNAL OF ORNITHOLOGY 2016; 158:83-90. [PMID: 32355602 PMCID: PMC7175680 DOI: 10.1007/s10336-016-1374-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/27/2016] [Accepted: 07/25/2016] [Indexed: 06/11/2023]
Abstract
Despite recent advances in avian tracking technology, archival devices still present several limitations. Traditional ring recoveries provide a complementary method for studying migratory movements, particularly for cohorts of birds with a low return rate to the breeding site. Here we provide the first international analysis of ring recovery data in the European Roller Coracias garrulus, a long-distance migrant of conservation concern. Our data comprise 58 records of Rollers ringed during the breeding season and recovered during the non-breeding season. Most records come from Eastern Europe, half are of juveniles and over three quarters are of dead birds. Thus, ring recoveries provide migration data for cohorts of Rollers-juveniles and unsuccessful migrants-for which no information currently exists, complementing recent tracking studies. Qualitatively, our results are consistent with direct tracking studies, illustrating a broad-front migration across the Mediterranean Basin in autumn and the use of the Arabian Peninsula by Rollers from eastern populations in spring. Autumn movements were, on average, in a more southerly direction for juveniles than adults, which were more easterly. Juvenile autumn recovery direction also appeared to be more variable than in adults, though this difference was not statistically significant. This is consistent with juveniles following a naïve vector-based orientation program, and perhaps explains the 'moderate' migratory connectivity previously described for the Roller. In the first (qualitative) analysis of Roller non-breeding season mortality, we highlight the high prevalence of shooting. The recovery age ratio was juvenile-biased in autumn but adult-biased in spring. Although not statistically significant, this difference points towards a higher non-breeding season mortality of juveniles than adults. Our study demonstrates the complementarity of ring recoveries to direct tracking, providing an insight into the migration of juvenile Rollers and non-breeding season mortality.
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Affiliation(s)
- Tom Finch
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ UK
- Present Address: RSPB/UCCRI, The David Attenborough Building, Pembroke Street, Cambridge, CB2 3QZ UK
| | - Jamie Dunning
- School of Environment and Life Sciences, University of Salford, Peel Building, Salford, M5 4WT UK
| | - Orsolya Kiss
- Faculty of Agriculture, University of Szeged, Andrássy Street 15, Hodmezovasarhely, H-6800 Hungary
| | | | | | | | - Otto Szekeres
- “Riparia” Association of Naturalists, Radanovac 83/b, 24000 Subotica, Serbia
| | - Béla Tokody
- BirdLife Hungary, Költo utca 21, Budapest, 1121 Hungary
| | - Aldina Franco
- School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ UK
| | - Simon J. Butler
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ UK
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Kiss O, Tokody B, Deák B, Moskát C. Increased landscape heterogeneity supports the conservation of European rollers (Coracias garrulus) in southern Hungary. J Nat Conserv 2016. [DOI: 10.1016/j.jnc.2015.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Finch T, Saunders P, Avilés JM, Bermejo A, Catry I, de la Puente J, Emmenegger T, Mardega I, Mayet P, Parejo D, Račinskis E, Rodríguez-Ruiz J, Sackl P, Schwartz T, Tiefenbach M, Valera F, Hewson C, Franco A, Butler SJ. A pan-European, multipopulation assessment of migratory connectivity in a near-threatened migrant bird. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12345] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Tom Finch
- School of Biological Sciences; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Philip Saunders
- School of Environmental Sciences; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Jesús Miguel Avilés
- Departamento de Ecología Funcional y Evolutiva; Estación Experimental de Zonas Áridas (EEZA-CSIC); Ctra. de Sacramento s/n. La Cañada de San Urbano 04120 Almería Spain
| | - Ana Bermejo
- Área de Estudio y Seguimiento de Aves; SEO/BirdLife; Melquiades Biencinto 34 28053 Madrid Spain
| | - Inês Catry
- Centro de Ecologia Aplicada Prof. Baeta Neves and InBio; Rede de Investigação em Biodiversidade e Biologia Evolutiva; Instituto Superior de Agronomia; Universidade de Lisboa; Tapada da Ajuda 1349-017 Lisboa Portugal
| | - Javier de la Puente
- Área de Estudio y Seguimiento de Aves; SEO/BirdLife; Melquiades Biencinto 34 28053 Madrid Spain
| | - Tamara Emmenegger
- Department of Bird Migration; Swiss Ornithological Institute; Seerose 1 6204 Sempach Switzerland
| | - Ieva Mardega
- Latvian Ornithological Society; A.k. 105 Rīga LV-1046 Latvia
| | - Patrick Mayet
- Cami de las Oliveidas; Saint-Mathieu-de-Tréviers 34270 France
| | - Deseada Parejo
- Departamento de Ecología Funcional y Evolutiva; Estación Experimental de Zonas Áridas (EEZA-CSIC); Ctra. de Sacramento s/n. La Cañada de San Urbano 04120 Almería Spain
- Área de Zoología, Departamento de Anatomía, Biología Celular y Zoología; Facultad de Ciencias; Universidad de Extremadura; Avenida de Elvas s/n 06006 Badajoz Spain
| | | | | | - Peter Sackl
- Universalmuseum Joanneum - Biowissenschaften; Weinzöttlstrasse 16 8045 Graz Austria
| | | | | | - Francisco Valera
- Departamento de Ecología Funcional y Evolutiva; Estación Experimental de Zonas Áridas (EEZA-CSIC); Ctra. de Sacramento s/n. La Cañada de San Urbano 04120 Almería Spain
| | - Chris Hewson
- British Trust for Ornithology; The Nunnery Thetford IP24 2PU UK
| | - Aldina Franco
- School of Environmental Sciences; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
| | - Simon James Butler
- School of Biological Sciences; University of East Anglia; Norwich Research Park Norwich NR4 7TJ UK
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