GTNP Breeding Bird Monitoring Project: The 1999 Season
نویسندگان
چکیده
منابع مشابه
Bird-window collisions in the summer breeding season
Birds that reside in urban settings face numerous human-related threats to survival, including mortality from bird-window collisions (BWCs). Our current understanding of this issue has largely been driven by data collected during spring and fall migration, and patterns of collision mortality during the summer breeding season remain relatively unexplored. We assessed BWCs during four breeding se...
متن کاملEctoparasitism shortens the breeding season in a colonial bird
When blood-feeding parasites increase seasonally, their deleterious effects may prevent some host species, especially those living in large groups where parasites are numerous, from reproducing later in the summer. Yet the role of parasites in regulating the length of a host's breeding season-and thus the host's opportunity for multiple brooding-has not been systematically investigated. The hig...
متن کاملNon-breeding season habitat quality mediates the strength of density-dependence for a migratory bird.
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 af...
متن کاملMultiple density-dependence mechanisms regulate a migratory bird population during the breeding season.
The mechanisms regulating bird populations are poorly understood and controversial. We provide evidence that a migratory songbird, the black-throated blue warbler (Dendroica caerulescens), is regulated by multiple density-dependence mechanisms in its breeding quarters. Evidence of regulation includes: stability in population density during 1969-2002, strong density dependence in time-series ana...
متن کاملNon-breeding season events influence sexual selection in a long-distance migratory bird.
The study of sexual selection has traditionally focused on events and behaviours immediately surrounding copulation. In this study, we examine whether carry-over effects from the non-breeding season can influence the process of sexual selection in a long-distance migratory bird, the American redstart (Setophaga ruticilla). Previous work on American redstarts demonstrated that overwintering in a...
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ژورنال
عنوان ژورنال: The UW National Parks Service Research Station Annual Reports
سال: 1999
ISSN: 2693-2407,2693-2385
DOI: 10.13001/uwnpsrc.1999.3377