First Record of Brown-headed Cowbird Egg in a Lesser Scaup Nest

David N. Koons

doi:10.1676/0043-5643(2000)112[0554:FROBHC]2.0.CO;2

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David N. Koons^*

^*Dept. of Biology, Montana State Univ., Bozeman, MT 59717; d_koons@hotmail.com

Abstract

On 16 June 1999, I found a Lesser Scaup (Aythya affinis) nest parasitized by a Brown-headed Cowbird (Molothrus ater). On 22 June the female scaup had begun incubating the 10 scaup eggs but the cowbird egg was missing, presumably ejected by the female scaup.

Citation Download Citation

David N. Koons "First Record of Brown-headed Cowbird Egg in a Lesser Scaup Nest," The Wilson Bulletin 112(4), 554, (1 December 2000). https://doi.org/10.1676/0043-5643(2000)112[0554:FROBHC]2.0.CO;2

Received: 27 March 2000; Accepted: 1 July 2000; Published: 1 December 2000

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