2012
DOI: 10.1098/rspb.2012.2207
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Continent-wide tracking to determine migratory connectivity and tropical habitat associations of a declining aerial insectivore

Abstract: North American birds that feed on flying insects are experiencing steep population declines, particularly long-distance migratory populations in the northern breeding range. We determine, for the first time, the level of migratory connectivity across the range of a songbird using direct tracking of individuals, and test whether declining northern populations have higher exposure to agricultural landscapes at their nonbreeding grounds in South America. We used light-level geolocators to track purple martins, Pr… Show more

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Cited by 125 publications
(147 citation statements)
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“…Several examples of patterns of strong connectivity exist, and recent examples include the Asian houbara bustard Chlamydotis macqueenii [40] and Swainson's thrush [39,41]. Equally abundant seem examples of no or very weak connectivity, as found in for example, bobolink Dolichonyx oryzivorus [42] and purple martin Progne subis [43]. The latter example is particularly intriguing as no connectivity was found for the eastern subspecies P. s. subis, whereas the wintering range of a population of the western subspecies P. s. arbicola did not overlap at all with the wintering range of the eastern subspecies, suggesting strong connectivity at the species level [43].…”
Section: (C) Migratory Performance and Stopoversmentioning
confidence: 99%
“…Several examples of patterns of strong connectivity exist, and recent examples include the Asian houbara bustard Chlamydotis macqueenii [40] and Swainson's thrush [39,41]. Equally abundant seem examples of no or very weak connectivity, as found in for example, bobolink Dolichonyx oryzivorus [42] and purple martin Progne subis [43]. The latter example is particularly intriguing as no connectivity was found for the eastern subspecies P. s. subis, whereas the wintering range of a population of the western subspecies P. s. arbicola did not overlap at all with the wintering range of the eastern subspecies, suggesting strong connectivity at the species level [43].…”
Section: (C) Migratory Performance and Stopoversmentioning
confidence: 99%
“…For migratory species, a key element to identifying limiting factors and planning conservation is understanding their movement patterns, including migratory connectivity-the links between habitat used at different times of year, including breeding territories, migratory stopover sites, and wintering areas (Marra et al 2011). Advances in tracking technologies continue to allow researchers to track smaller animals with greater temporal and geographic precision than ever before, which is revolutionizing our understanding of the movements of organisms and the factors that influence movement and survival during all phases of their life cycle (Fraser et al 2012, Kays et al 2015.…”
Section: Tracking Wildlife Movementmentioning
confidence: 99%
“…For migratory birds breeding in North America and wintering in the Neotropics or South America, we generally lack the kind of detail on migratory connectivity between breeding, stopover and wintering sites to effectively manage and conserve species (Webster et al 2002). Recently, a number of approaches have been taken to improve our ability to track small migratory species ranging from endogenous markers such as genetics and stable isotope profiles to ever more miniaturized transmitters and geolocators (Boulet et al 2006, Hobson and Norris 2008, Stutchbury et al 2009, Chabot et al 2012, Fraser et al 2012, Cormier et al 2013, Fraser et al 2013. The use of naturally occurring stable isotope values in feathers and the modeling of origins of birds to isotopic patterns across landscape or ''isoscapes'' has especially improved our ability in this regard (Hobson and Wassenaar 2008).…”
Section: Introductionmentioning
confidence: 99%