A comparative analysis of laying times in passerine birds

Autor:	D. Glen McMaster, Trevor E. Pitcher, Spencer G. Sealy, Diane L. H. Neudorf
Rok vydání:	2004
Předmět:	Cowbird Future studies biology Ecology Foraging Zoology biology.organism_classification Laying Passerine Predation Nest biology.animal Sunrise Ecology Evolution Behavior and Systematics
Zdroj:	Journal of Field Ornithology. 75:113-122
ISSN:	1557-9263 0273-8570
DOI:	10.1648/0273-8570-75.2.113
Popis:	We documented the time of day of laying and the total time spent on the nest during laying (laying bout) in 21 species of passerine birds and the brood-parasitic Brown-headed Cowbird (Molothrus ater) at Delta Marsh, Manitoba, between 1989 and 1995. Brown-headed Cowbirds laid on average 31.2 min before sunrise, whereas mean laying times of the other species ranged from 11.3 min after sunrise through early afternoon. Species that laid later in the day tended to spend more time on their nests during laying. Smaller species tended to lay earlier in the day and had significantly shorter laying bouts than larger species. Future studies accounting for variation in foraging and reproductive behavior and predation risk between taxonomic groups may explain additional variation in laying time and duration.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e3aa64985b9db6fac72dd00f7e9ab50 https://doi.org/10.1648/0273-8570-75.2.113 Zobrazit plný text záznamu