Nocturnal activity of nesting shrubland and grassland passerines: Chapter 9

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Abstract

Nocturnal activity of nesting passerines is largely undocumented in field situations. We used video recordings to quantify sleep patterns of four shrubland and three grassland bird species during the nestling period. All species exhibited “back sleep” (bill tucked under scapular feathers); individuals woke frequently for vigils of their surroundings. Sleep-bout duration varied from 6 minutes (grasshopper sparrow) to 28 minutes (blue-winged warbler, field sparrow). Duration on nest varied from 6.4 hours (field sparrow) to 8.8 hours (indigo bunting). Adults woke 20–30 minutes before sunrise. First morning absence from the nest was short; nestlings were fed within 12 minutes of a parent’s departure. Further research is needed to understand energetic costs of sleep and behavioral adaptations to environmental pressures.

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Additional publication details

Publication type Book chapter
Title Nocturnal activity of nesting shrubland and grassland passerines: Chapter 9
ISBN 9780520273139
DOI 10.1525/california/9780520273139.003.0009
Year Published 2013
Language English
Publisher California Scholarship Online
Contributing office(s) Coop Res Unit Leetown
Description 11 p.
Larger Work Type Book
Larger Work Title Video surveillance of nesting birds
First page 105
Last page 115
Country United States
State Connecticut
City Southbury
Other Geospatial Bent of the River Sanctuary
Online Only (Y/N) N
Additional Online Files (Y/N) N