Repeated count surveys help standardize multi-agency estimates of American Oystercatcher (Haematopus palliatus) abundance

Fitness consequences of divorce in the oystercatcher, Haematopus ostralegus

We investigated the fitness consequences of divorce in oystercatchers. We made a distinction between two types of divorce: in desertions the disruption of the pair bond is initiated by one of the pair members, and in usurpations by a conspecific individual. Survival and reproduction prospects for oystercatchers are largely determined by their social status (nonbreeder or breeding bird at a site...

Territory Structure, Parental Provisioning, and Chick Growth in the American Black Oyster- Catcher Haematopus Bachmani

The reproductive performance of species provisioning offspring depends on both the availability of prey and the parental effort required to capture and deliver it. For example, in the strongly territorial breeding system of the Eurasian Oystercatcher Haematopus ostralegus, shoreline breeding territories are located adjacent to mudflats, where prey are captured, allowing offspring to accompany b...

Ornithodoros (Alectorobius) capensis Neumann (Acari: Ixodoidea: Argasidae), a parasite of seabirds, established along the southeastern seacoast of the United States.

Ornithodoros (Alectorobius) capensis Neumann, an ectoparasite of seabirds found circumglobally in the tropics and subtropics, has become established along the southeastern seacoast of the United States. The tick has been found feeding primarily on brown pelicans, Pelecanus occidentalis, but also has been found on the laughing gull, Larus atricilla, and the American oystercatcher, Haematopus pal...

Adjusting count period strategies to improve the accuracy of forest bird abundance estimates from point transect distance sampling surveys

Although point transect distance sampling methods have become widely used in surveys of forest birds, there has been no attempt to tailor field methods to maximize the accuracy of abundance estimates by minimizing the effects of violations of the method’s critical assumptions, which are: (1) birds at distance 0 m are detected with certainty, (2) birds are detected at their initial location and ...

Sea-surface temperature affects breeding density of an avian rocky intertidal predator, the black oystercatcher Haematopus bachmani