Establishing the Breeding Provenance of a Temperate-Wintering North American Passerine, the Golden-Crowned Sparrow, Using Light-Level Geolocation

Seavy, Nathaniel E.; Humple, Diana L.; Cormier, Renée L.; Gardali, Thomas

doi:10.1371/journal.pone.0034886

Cited by 35 publications

(30 citation statements)

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“…We found that 8 out of 9 coastal-wintering birds migrated along a coastal route and went to breeding sites in coastal areas, while 7 of the 8 inland-wintering birds had a more interior migratory path and breeding locations. Our findings are consistent with our earlier work that showed four coastal-wintering Golden-crowned Sparrows migrated to coastal breeding areas and followed a coastal migratory route [12]. However, with the larger number of individuals described, here we found that one coastal-wintering bird went to an inland breeding site, and one inland-wintering bird went to a coastal breeding site, revealing that there is some mixing between groups.…”

Section: Discussionsupporting

confidence: 93%

“…We compared the breeding locations, migratory routes, migratory phenology, distance travelled, rates of migration, and return rates of Golden-crowned Sparrows from these two wintering areas. We predicted that coastal-wintering birds would follow a coastal migration route and breed at coastal sites, consistent with previous findings [12]; for inlandwintering birds, we investigated whether they migrated to the same or different breeding locations from the coastalwintering birds, and calculated the strength of migratory connectivity for birds from these two wintering areas.…”

Section: Introductionsupporting

confidence: 73%

“…In our preceding study with light-level geolocators, we showed that four Goldencrowned Sparrows that wintered on the coast of California migrated to breeding sites along the Gulf Coast of Alaska [12]. Since the wintering range of Golden-crowned Sparrows in California extends from the coast inland to the foothills of the Sierra Nevada mountain range, it is possible that inland-wintering Golden-crowned Sparrows may breed in a different region than the birds that winter on the coast.…”

Section: Introductionmentioning

confidence: 89%

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Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

et al. 2016

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Knowledge of migratory connectivity is critical to understanding the consequences of habitat loss and climate change on migratory species. We used light-level geolocators to determine breeding locations and migratory routes of wintering Golden-crowned Sparrows (Zonotrichia atricapilla) in two regions of California, USA. Eight out of 9 birds tagged at coastal-wintering sites in Marin County went to breeding sites along the Gulf Coast of Alaska, while 7 out of 8 inland-wintering birds in Placer County migrated to interior sites in the Yukon, Northwest Territories, and British Columbia, Canada. Our estimate of the strength of migratory connectivity was relatively high (rm = 0.66). Coastal-wintering birds followed a coastal migration route while inland-wintering birds migrated inland. Coastalwintering birds migrated significantly farther than inland birds (3,624 km versus 2,442 km). Coastal birds traveled at a greater rate during spring migration (179 km/d) than did inland birds (118 km/d), but there was no statistical difference in the rate of fall migration (167 km/d and 111 km/d, respectively). Dates of arrival and departure, and duration of spring and fall migration, did not differ between groups, nor did return rates. Rates of return also did not differ between tagged and control birds. The distinct migration routes and breeding areas suggests that there may be more structuring in the migratory geography of the Golden-crowned Sparrow than in a simple panmictic population.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 89%

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Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

et al. 2016

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“…In particular, light-level geolocators (hereafter "geolocators"), which provide daily estimates of a bird's geographic position by recording day length (Stutchbury et al 2009, Robinson et al 2010, have revolutionized our understanding of the movements of long-distance migrants (e.g., Heckscher et al 2011, Seavy et al 2012.…”

Section: Methodsmentioning

confidence: 99%

Long-distance bird migration within South America revealed by light-level geolocators

Jahn

Levey

Cueto

et al. 2013

The Auk

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Abstract.-Little is known about the timing of migration, migration routes, and migratory connectivity of most of the >230 species of birds that breed at south temperate latitudes of South America and then migrate toward the tropics to overwinter. We used light-level geolocators to track the migration of 3 male and 3 female Fork-tailed Flycatchers (Tyrannus savana) captured on their breeding territories in Argentina. All birds initiated fall migration between late January and late February, and migrated 45 to 66 km day -1 in a northwesterly direction through central South America to either one or two wintering areas. Five individuals first spent several weeks (in April and May) in western Amazonia (mainly Peru, northwestern Brazil, and southern Colombia) before moving east to spend the rest of the non-breeding season in central Venezuela and northern Brazil. One individual occupied primarily one wintering area in eastern Colombia, northwestern Brazil, and southwestern Venezuela. Fall migration took approximately 7-12 weeks to complete and covered a distance of 2,888-4,105 km. We did not analyze spring migration data because of broad overlap with the austral spring equinox. These results are the first data on wintering locations, migration timing, and routes of individual migrant passerine birds that breed in South America. Given the general lack of similar data for practically all migratory birds that breed in South America, geolocator technology has the potential to revolutionize our understanding of how birds migrate-and the threats they face-on South America's rapidly changing landscape. La migración a Larga Distancia de Aves en América del Sur Revelado por GeolocalizadoresResumen.-Poco se sabe sobre la fenología de la migración, las rutas de migración, y la conectividad migratoria de la mayoría de los >230 especies de aves que se reproducen en latitudes templadas del sur de Sur América, y que luego migran hacia los trópicos para invernar. Utilizamos geolocalizadores para estudiar la migración de tres machos y tres hembras de Tyrannus savana capturados en sus territorios de cría en Argentina. Todas las aves iniciaron la migración de otoño entre finales de enero y finales de febrero, y migraron de 45 a 66 km dia -1 hacia el noroeste por el centro de América del Sur, hasta una o dos áreas de invernada. Cinco individuos primero pasaron varias semanas (en abril y mayo) en la Amazonia occidental (principalmente Perú, noroeste de Brasil, y sur de Colombia), antes de moverse hacia el este para pasar el resto de la temporada no reproductiva en el centro de Venezuela y el norte de Brasil. Un individuo estuvo principalmente en un área de invernada en el este de Colombia, noroeste de Brasil, y el suroeste de Venezuela. La migración de otoño duró aproximadamente 7-12 semanas, y cubrió una distancia de 2888-4105 km. No analizamos los datos de la migración de primavera a causa de una amplia superposición con el equinoccio de la primavera austral. Estos resultados representan los primeros datos sobre los lugares de invernad...

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“…Phillips et al 2004, Gonzáles-Solís et al 2007, Guilford et al 2009, Egevang et al 2010, Seavy et al 2012, Smith & Gaston 2012. Combining such data with statistical modeling of longterm capture-mark-resighting (CMR) data now allows us to explore in detail the relationships between environmental conditions in both breeding and nonbreeding areas and adult survival rates.…”

Section: Introductionmentioning

confidence: 99%

Prey density in non-breeding areas affects adult survival of black-legged kittiwakes Rissa tridactyla

Reiertsen¹,

Erikstad²,

Anker‐Nilssen³

et al. 2014

Mar. Ecol. Prog. Ser.

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In migratory birds, environmental conditions in both breeding and non-breeding areas may affect adult survival rates and hence be significant drivers of demographic processes. In seabirds, poor knowledge of their true distribution outside the breeding season, however, has severely limited such studies. This study explored how annual adult survival rates of black-legged kittiwakes Rissa tridactyla on Hornøya in the southern Barents Sea were related to temporal variation in prey densities and climatic parameters in their breeding and non-breeding areas. We used information on the kittiwakes' spatiotemporal distribution in the non-breeding season gained from year-round light-based tracking devices (geolocators) and satellite transmitters, and kittiwake annual adult survival rates gained from a multistate capture-mark-recapture analysis of a 22 yr time series of colour-ringed kittiwakes. In the post-breeding period, kittiwakes concentrated in an area east of Svalbard, in the winter they stayed in the Grand Banks/Labrador Sea area, and in the pre-breeding period they returned to the Barents Sea. We identified 2 possible prey categories of importance for the survival of kittiwakes in these areas (sea butterflies Thecosomata in the Grand Banks/Labrador Sea area in winter and capelin Mallotus villosus in the Barents Sea in the pre-breeding season) that together explained 52% of the variation in adult survival rates. Our results may have important implications for the conservation of kittiwakes, which are declining globally, because other populations use the same areas. Since they are under the influence of major anthropogenic activities including fisheries, international shipping and the offshore oil and gas industry, both areas should be targeted for future management plans.KEY WORDS: Black-legged kittiwake · Pteropods · Capelin · Capture-mark-recapture analyses · Non-breeding distributionResale or republication not permitted without written consent of the publisher FREE REE

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Establishing the Breeding Provenance of a Temperate-Wintering North American Passerine, the Golden-Crowned Sparrow, Using Light-Level Geolocation

Cited by 35 publications

References 27 publications

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California

Long-distance bird migration within South America revealed by light-level geolocators

Prey density in non-breeding areas affects adult survival of black-legged kittiwakes Rissa tridactyla

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