Evening Nest-box Departure Times of Eastern Screech-Owls

Autor:	W. G. Deuser
Rok vydání:	2011
Předmět:	Evening Overcast Geography Ecology Zoology Dusk Animal Science and Zoology Subspecies Sunset Nest box Ecology Evolution Behavior and Systematics
Zdroj:	The Wilson Journal of Ornithology. 123:641-646
ISSN:	1938-5447 1559-4491
DOI:	10.1676/10-114.1
Popis:	I observed 514 nest-box departures of 12 different individual Eastern Screech-Owls (Megascops asio), both males and females, at dusk in Falmouth, Massachusetts over a period of 12 years and compared their departure times to local sunset. Mean (± SD) delay after sunset was 21 ± 12 min, identical for males and females, but longer than those reported for more southerly locations. Females departed significantly earlier on overcast evenings. Females advanced their departure times during the nestling period by as much as 2.6 min/day, on average, over a 25-day period. The observed differences in departure delays among populations in Texas, the Washington, D.C. area, and Massachusetts may be an expression of differences in behavior among subspecies of M. asio.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::804a9d3a53226cb3d5021b92c640fef0 https://doi.org/10.1676/10-114.1 Zobrazit plný text záznamu Plný text ve formátu PDF