Hatching and Fledging Times from Grassland Passerine Nests

Pamela J. Pietz, Diane A. Granfors and Todd A. Grant

in Video Surveillance of Nesting Birds

Published by University of California Press

Published in print June 2012 | ISBN: 9780520273139
Published online January 2013 | e-ISBN: 9780520954090 | DOI:
Hatching and Fledging Times from Grassland Passerine Nests

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Accurate estimates of fledging age are needed in field studies to avoid inducing premature fledging or missing the fledging event. Both may lead to misinterpretation of nest fate. Correctly assessing nest fate and the length of the nestling period can be critical for accurate calculation of nest survival rates. We estimated fledging ages from grassland passerine nests monitored from hatching through fledging with miniature video cameras in North Dakota and Minnesota from1996 to 2001. We compared these values to those obtained from traditional nest visits and from literature. Video surveillance was a useful tool for obtaining new information, for assessing standard field methods, and for amending or corroborating published statements related to hatching and fledging chronology.

Keywords: camera; fledging age; grassland; hatching; nest visits; passerine; premature fledging; video

Chapter.  7434 words.  Illustrated.

Subjects: Zoology and Animal Sciences

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