Activity pattern of a pair of nesting flammulated owls (Otus flammeolus) in Idaho

Publication Type:

Journal Article

Authors:

Hayward, Greg

Source:

Northwest Science, Northwest Scientific Association, Volume 60, Issue 3, p.141-144 (1986)

Call Number:

A86HAY02IDUS

URL:

https://research.wsulibs.wsu.edu/xmlui/handle/2376/1799

Keywords:

Otus flammeolus

Abstract:

A single flammulated owl (Otus flammelous) nest was monitored during late incubation and early nestling period to determine the pattern of nest visits by foraging adults. Visits to the nest by adults began each evening 10 to 30 minutes after sunset and ended during the hour before sunrise. The foraging adults were most active in early evening and just before dawn, although they visited the nest throughout the night. The number of nocturnal nest visits increased linearly during the nestling period from 22 visits per night recorded prior to hatching, to 97 visits per night when the oldest of three young was 15 days old. This increase was accomplished by shortening the intervals between delivery bouts during the middle of the night. There was no evidence of diurnal foraging.