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Documents disponibles écrits par cet auteur (15)
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Article
Chelsea E. Weithman, Auteur ; James D. Fraser, Auteur ; Sarah M. Karpanty, Auteur ; Daniel H. Catlin, AuteurMobility of precocial chicks facilitates self-feeding and escape from predators, but also allows chicks to move into potentially dangerous areas. At Cape Hatteras National Seashore and Pea Island National Wildlife Refuge, North Carolina, precoci[...]
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Chelsea E. Weithman, Auteur ; Daniel Gibson, Auteur ; Katie M. Walker, Auteur ; Sidney B. Maddock, Auteur ; James D. Fraser, Auteur ; Sarah M. Karpanty, Auteur ; Daniel H. Catlin, AuteurPiping Plovers (Charadrius melodus) undertake comparatively short migrations for a shorebird and were not previously thought to congregate in large numbers during migration. Superpopulation size (individuals occurring at the study site during th[...]
Article
Kelsi L. Hunt, Auteur ; James D. Fraser, Auteur ; Sarah M. Karpanty, Auteur ; Daniel H. Catlin, AuteurHabitat quality can have a profound effect on the condition and fitness of individual birds and on population demography. We investigated the effects of habitat metrics (invertebrate abundance and habitat type) on the condition (egg mass, adult [...]
Article
Wenjuan Wang, Auteur ; James D. Fraser, Auteur ; Jiakuan Chen, AuteurSummary The middle and lower Yangtze River floodplain is a globally important wintering area for waterbirds in the East Asian-Australasian Flyway. Ornithologists have reported on wintering waterbirds in the floodplain since the 1950s. However, a[...]
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Kelsi L. Hunt, Auteur ; Lauren R. Dinan, Auteur ; Meryl J. Friedrich, Auteur ; Mary Bomberger Brown, Auteur ; Joel G. Jorgensen, Auteur ; Daniel H. Catlin, Auteur ; James D. Fraser, AuteurPiping Plovers (Charadrius melodus) are primarily monogamous birds that usually raise only one brood per season, but rare instances of double brooding have been documented. Piping Plovers breeding in the northern Great Plains, USA were studied i[...]
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Stephanie M. Nefas, Auteur ; Kelsi L. Hunt, Auteur ; James D. Fraser, Auteur ; Sarah M. Karpanty, Auteur ; Daniel H. Catlin, Auteur
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Daniel H. Catlin, Auteur ; Olga Milenkaya, Auteur ; Kelsi L. Hunt, Auteur ; Meryl J. Friedrich, Auteur ; James D. Fraser, AuteurThe goal of many animal conservation efforts is to improve short-term demography, but there is growing interest in the potential for producing more fit individuals, resulting in long-lasting demographic impacts. The environments that animals exp[...]
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Christy N. Wails, Auteur ; Daniel H. Catlin, Auteur ; Samantha G. Robinson, Auteur ; Henrietta A. Bellman, Auteur ; Katie W. Oliver, Auteur ; Hope L. VanDerwater, Auteur ; Sharon S. Dorsey, Auteur ; Audrey DeRose-Wilson, Auteur ; Sarah M. Karpanty, Auteur ; James D. Fraser, AuteurThe use of unique markers in ornithology has a long history and is predicated on the assumption that markers have negligible effects on behavior and survival. The assumption that marks are harmless is particularly important with imperiled specie[...]
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Jonathan B. Cohen, Auteur ; Sarah M. Karpanty, Auteur ; James D. Fraser, Auteur ; Barry R. Truitt, AuteurA population decline of the western Atlantic red knot (Calidris canutus rufa) has been linked to food limitation during the spring migratory stopover in Delaware Bay, USA. The stopover ecology at potential alternative sites has received little a[...]
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Kelsi L. Hunt, Auteur ; Daniel H. Catlin, Auteur ; Joy H. Felio, Auteur ; James D. Fraser, AuteurEvaluating the possible effects of intensive research on species being studied and on the results of studies is important for both ethical and scientific reasons. We captured, banded, recaptured, and measured prefledged Piping Plover (Charadrius[...]
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Matthew D. Hillman, Auteur ; Sarah M. Karpanty, Auteur ; James D. Fraser, AuteurMethods commonly used to estimate the number of nests and size of the breeding population at colonies of Least Terns (Sternula antillarum) and other waterbirds include walk-through counts of nests (ground-nest counts) and counts of incubating ad[...]
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Audrey DeRose-Wilson, Auteur ; James D. Fraser, Auteur ; Sarah M. Karpanty, Auteur ; Daniel H. Catlin, AuteurDespite concerns about their population status, information about the habitat preferences, population size, and vital statistics of Wilson's Plovers (Charadrius wilsonia) is currently lacking. We compared habitat characteristics of nest sites an[...]
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Jonathan B. Cohen, Auteur ; James D. Fraser, Auteur
Article
James F. Dwyer, Auteur ; James D. Fraser, Auteur ; Joan L. Morrison, AuteurIn Florida, habitats that include the breeding territories of Crested Caracaras (Caracara cheriway) are protected, but non-breeding individuals may be vulnerable because they may occupy different areas and habitats. We captured and radio-tagged [...]
Article
Jonathan B. Cohen, Auteur ; James D. Fraser, Auteur ; Daniel H. Catlin, AuteurThe threatened Atlantic Coast population Of Piping Plovers (Charadrius melodus) has not increased in recent years and remains 332 pairs short of the recovery goal of 2000 pairs. Habitat loss to development is a major threat to the population, an[...]
