Extra-Pair Visitations to a Marbled Murrelet Nest in Northern California

Autor:	Richard T. Golightly, Harry R. Carter, Percy N. Hébert
Rok vydání:	2011
Předmět:	Natal homing Nest biology Ecology Plumage Marbled meat Seasonal breeder General Earth and Planetary Sciences Brachyramphus Nest site biology.organism_classification General Environmental Science Predation
Zdroj:	Northwestern Naturalist. 92:95-100
ISSN:	1938-5315 1051-1733
DOI:	10.1898/08-17.1
Popis:	Although nest prospecting, natal philopatry, and nest-site fidelity have been observed in many alcids, few data demonstrate these behaviors in Marbled Murrelets (Brachyramphus marmoratus). Prior to the 2003 breeding season, we installed a permanent video camera adjacent to a Marbled Murrelet nest site that had been used in 2001 and 2002. Video recordings in 2003 detected the simultaneous presence of 3 murrelets in alternate plumage on the nest branch, once during the incubation period, and once during the chick period. We did not observe aggression, suggesting familiarity between the extra-pair birds and site holders, and possibly avoidance of detection by predators. Without banded individuals we hypothesize extra-pair visitations at an active nest reflect nest-site prospecting, natal philopatry, or nest-site fidelity.
Databáze:	OpenAIRE
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