Courtship and Offspring Feeding in Passerines, a Study Using Citizen Volunteers

Tetsuro Yoshikawa; Sachiko Endo

doi:10.2326/osj.16.59

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Tetsuro Yoshikawa,^1,* Sachiko Endo^2,**

¹1 Department of Forest Vegetation, Forestry and Forest Products Research Institute, 1 Matsunosato, T
²2 Department of Life Sciences, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, J

^* Corresponding author, E-mail: yoshikawa.tetsuro@gmail.com
^** Present address: Tokyo University of Agriculture, 1737 Hunako, Atsugi, Kanagawa 243-0034, Japan

Abstract

We summarize records of courtship and offspring feeding for 16 resident passerine birds based on long-term observations made by amateur ornithologists in Kanagawa Prefecture, Japan. Courtship feeding was detected in nine passerine species, including two that had not been previously reported to perform this behavior in Japan. Fledgling feeding and food transport to nests were detected in almost all of the species. Courtship feeding was detected mainly in early spring, but in some species it also occurred in winter. We discuss briefly the implications of the results, as well as possible biases and limitations of citizen-based research.

Citation Download Citation

Tetsuro Yoshikawa and Sachiko Endo "Courtship and Offspring Feeding in Passerines, a Study Using Citizen Volunteers," Ornithological Science 16(1), 59-63, (1 January 2017). https://doi.org/10.2326/osj.16.59

Received: 9 November 2015; Accepted: 1 July 2016; Published: 1 January 2017

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