Migratory Connectivity of a Widely Distributed Songbird, the American Redstart (Setophaga ruticilla)

Norris, D. Ryan; Marra, Peter P.; Bowen, Gabriel J.; Ratcliffe, Laurene M.; Royle, J. Andrew; Kyser, T. Kurt

doi:10.2307/40166836

Cited by 106 publications

(137 citation statements)

References 41 publications

Supporting

Mentioning

123

Contrasting

Unclassified

Order By: Relevance

“…7,23 Moreover, these results further corroborate the presence of east-west winter divides in several Nearctic-Neotropical migrants. 24 Despite nonbreeding-site differences between populations on an east-west gradient, our data do not enable us to determine where breeding populations sort into distinct overwintering localities.…”

Section: Discussionsupporting

confidence: 74%

Estimating Migratory Connectivity of Gray Catbirds (Dumetella carolinensis) using Geolocator and Mark–recapture Data

Ryder

Fox

Marra

2011

The Auk

Self Cite

View full text Add to dashboard Cite

Resumen.-Comprender la conectividad entre poblaciones reproductivas y no reproductivas de aves migratorias es fundamental para nuestro conocimento de fenómenos biológicos como la dinámica poblacional y la dispersión. Además, nuestra habilidad para cuantificar la conectividad migratoria tiene consecuencias inevitables para la conservación y el manejo de especies que utilizan distintas localidades geográficas. La tecnología está causando avances rápidos en nuestra habilidad para seguir aves a lo largo de su ciclo anual y para recolectar datos sobre el grado de conectividad entre poblaciones reproductivas y no reproductivas. Combinamos dos métodos directos, marcado-recaptura (n = 17) y geolocalización (n = 6), para estimar la conectividad migratoria de poblaciones reproductivas y no reproductivas de Dumetella carolinensis. Los datos de los geolocalizadores indican que las aves que crían en el Atlántico medio pasan el invierno en Cuba y el sur de Florida. Los datos de marcado-recaptura apoyaron nuestros resultados basados en geolocalizadores pero además brindaron una perspectiva espacial más amplia al documentar que las poblaciones del Atlántico medio y del medio oeste ocupan localidades geográficas distintas durante el período no reproductivo. Esta investigación resalta la importancia de los geolocalizadores y de otras herramientas para incrementar nuestro conocimiento sobre la conectividad migratoria. Finalmente, nuestros resultados destacan el valor potencial de los datos de marcado-recaptura del U.S. Geological Survey (USGS) Bird Banding Laboratory, que con frecuencia son subutilizados en investigaciones ornitológicas.-448 - Abstract.-Understanding the connectivity between breeding and nonbreeding populations of migratory birds is fundamental to our knowledge of biological phenomena such as population dynamics and dispersal. Moreover, our ability to quantify migratory connectivity has inevitable consequences for both conservation and management of species that utilize distinct geographic locations. Technology is rapidly advancing our ability to track birds throughout the annual cycle and to collect data on the degree of connectivity among breeding and nonbreeding populations. We combined two direct methods, mark-recapture (n = 17) and geolocation (n = 6), to estimate the migratory connectivity of breeding and nonbreeding populations of Gray Catbirds (Dumetella carolinensis). Data from geolocators show that birds breeding in the Mid-Atlantic overwinter in both Cuba and southern Florida. Mark-recapture data supported our geolocator results but also provided a broader spatial perspective by documenting that Mid-Atlantic and Midwestern populations occupy distinct geographic localities during the nonbreeding period. This research underscores the importance of geolocators, as well as other tools, to advance our understanding of migratory connectivity. Finally, our results highlight the potential value of U.S. Geological Survey (USGS) Bird Banding Laboratory mark-recapture data, which are often underutilized in ornitho...

show abstract

Section: Discussionsupporting

confidence: 74%

Estimating Migratory Connectivity of Gray Catbirds (Dumetella carolinensis) using Geolocator and Mark–recapture Data

Ryder

Fox

Marra

2011

The Auk

Self Cite

View full text Add to dashboard Cite

show abstract

“…always be a reliable indicator of per capita resource abundance for an entire overwinter period [54,55]. We do not know what determines initial redstart densities on non-breeding grounds and have only a nascent understanding of how individuals produced on distinct breeding areas disperse across wintering sites [56]. Because adult redstarts exhibit high site fidelity between years [36,57], annual variation in density is probably driven by changes in the abundance of new yearling recruits [58].…”

Section: Discussionmentioning

confidence: 99%

Non-breeding season habitat quality mediates the strength of density-dependence for a migratory bird

et al. 2015

Self Cite

View full text Add to dashboard Cite

Our understanding of when natural populations are regulated during their annual cycle is limited, particularly for migratory species. This information is needed for parametrizing models that can inform management and conservation. Here, we use 14 years of data on colour-marked birds to investigate how conspecific density and habitat quality during the tropical non-breeding period interact to affect body condition and apparent annual survival of a long-distance migratory songbird, the American redstart (Setophaga ruticilla). Body condition and survival of birds in high-quality mangrove habitat declined as density increased. By contrast, body condition improved and survival did not vary as density increased in adjacent, lower quality scrub habitat, although mean condition and survival were almost always lower than in mangrove. High rainfall enhanced body condition in scrub but not in mangrove, suggesting factors such as food availability outweighed consequences of crowding in lower quality habitat. Thus, survival of overwintering redstarts in mangrove habitat, disproportionately males, appears to be regulated by a crowding mechanism based on densitydependent resource competition. Survival of individuals in scrub, mostly females, appears to be limited by density-independent environmental factors but not regulated by crowding. The contrasting effects of density and food limitation on individuals overwintering in adjacent habitats illustrate the complexity of processes operating during the non-breeding period for migratory animals, and emphasize the need for long-term studies of animals in multiple habitats and throughout their annual cycles.

show abstract

“…9; Rubenstein et al 2002). Norris et al (2006) surveyed the distribution of most populations of the American Redstart throughout the United States and found fairly strong linkages between wintering and breeding sites, with some populations showing leap-frog migration (northernmost breeding populations winter the farthest south and must pass over habitat with conspecifics) and others chain migration (latitudinal arrangement of populations is similar during both breeding and nonbreeding). Hobson et al (2004) have linked wintering populations of Bicknell's Thrush (Catharus bicknelli) from the Dominican Republic with previously unknown breeding populations in southern Quebec and elsewhere (Hobson et al 2001).…”

Section: Connectivity: Can We Delineate Subpopulationsmentioning

confidence: 99%

Recent advances in understanding migration systems of New World land birds

Faaborg

Holmes

Anders

et al. 2010

Ecological Monographs

Self Cite

292

259

View full text Add to dashboard Cite

Abstract. Our understanding of migratory birds' year-round ecology and evolution remains patchy despite recent fundamental advances. Periodic reviews focus future research and inform conservation and management; here, we take advantage of our combined experiences working on Western Hemisphere avian migration systems to highlight recent lessons and critical gaps in knowledge. Among topics discussed are: (1) The pipeline from pure to applied researchers leaves room for improvement. (2) Population limitation and regulation includes both seasonal and between-season interactions. (3) The study of movements of small-bodied species remains a major research frontier. (4) We must increase our understanding of population connectivity. (5) With few exceptions, population regulation has barely been investigated. (6) We have increasingly integrated landscape configuration of habitats, large-scale habitat disturbances, and habitat quality impacts into models of seasonal and overall demographic success. (7) The post-breeding season (late summer for latitudinal migrants) is increasingly appreciated for its impacts on demography. (8) We recognize the diverse ways that avian brood parasites, nest predators, and food availability affect demography. (9) Source-sink and meta-population models help us understand migratory avian distributions among fragmented habitats. (10) Advances in modeling have improved estimates of annual survival and fecundity, but for few species. (11) Populations can be limited by ecological conditions in winter, but habitat needs are poorly known for most species at this time. (12) Migration tends to occupy broad spatial fronts that may change seasonally or when migrants cross major barriers. En route conditions can limit migrant populations; linking migration habitat quality indicators to fitness or population consequences presents a major challenge. (14) A variety of intra-tropical Neotropical migration patterns are recognizable, but almost nothing is known about these systems beyond descriptions of a few typical species' movements. (15) Global climate change scenarios predict range and phenology shifts of Neotropical migrant bird populations that must be considered in conservation plans. Future studies will depend on new technologies and the integration of modeling with sophisticated, large-spatial-scale measurement and parameter estimation; whether the pace of research and management involving migratory birds can match the growth of environmental threats remains to be seen.

show abstract

Migratory Connectivity of a Widely Distributed Songbird, the American Redstart (Setophaga ruticilla)

Cited by 106 publications

References 41 publications

Estimating Migratory Connectivity of Gray Catbirds (Dumetella carolinensis) using Geolocator and Mark–recapture Data

Estimating Migratory Connectivity of Gray Catbirds (Dumetella carolinensis) using Geolocator and Mark–recapture Data

Non-breeding season habitat quality mediates the strength of density-dependence for a migratory bird

Recent advances in understanding migration systems of New World land birds

Contact Info

Product

Resources

About