Reproductive behaviors of vertebrates are often underpinned by temporal patterns of
hormone secretion. We investigated interspecific patterns of circulating testosterone in male …

This paper compares the available North Americanliterature and data concerning several
ecologicalfactors affecting Phragmites australis in inlandfreshwater, tidal fresh, and tidal …

DNA fingerprinting or microsatellite PCR studies have disclosed that extra-pair paternity
(EPP) is a regular and relevant phenomenon in socially monogamous species …

Hatching asynchrony in avian species often leads to the formation of a size hierarchy that
places last–hatched nestlings at a significant disadvantage. The hatching muscle (musculus …

The landscape within the Chesapeake Bay watershed has been and continues to be
impacted by human modifications. Understanding if such anthropogenic disturbances …

The Conservation Reserve Program (CRP) has been credited with contributing substantially
to the conservation of grassland birds. Although many species have nested in grasslands …

Recent evidence suggests that mercury exposure has negative effects on the health of
songbirds, and species that forage in wetlands may be at a greater risk of bioaccumulation …

The ability to measure vegetation structure at spatial scales that are biologically meaningful
for wildlife is often limited because information about the spatial scale of habitat selection is …

We conducted a comparative analysis of eight potential correlates of egg rejection in hosts
of the parasitic Brown-headed Cowbird (Molothrus ater) to test the evolutionary equilibrium …

Birds raise their young under constant risk of predation, which shapes how parents and
young communicate acoustically. Nestling begging calls extract care from parents but …