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The time of day of egg laying by the Brown-headed Cowbird and other icterines

TitleThe time of day of egg laying by the Brown-headed Cowbird and other icterines
Publication TypeJournal Article
Year of Publication1991
AuthorsScott DM
JournalCanadian Journal of Zoology
Volume69
Pagination2093-2099
KeywordsVIREO
Abstract

{I present data on the time of day of oviposition for 16 species of icterines to evaluate the idea that laying exceptionally early in the morning by the brood parasite, the Brown-headed Cowbird (Molothrus ater), is a specialization for parasitism. This cowbird, the earliest known layer among icterines, typically lays before sunrise (sunrise - 9.14 +- 2.52 (SE) min