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1 December 2009 Adoption by a Territorial Passerine
Russell A. Ligon, Mark Liu, Geoffrey E. Hill
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Abstract

We observed and video-taped actively nesting adult Eastern Bluebirds (Sialia sialis) repeatedly feeding abandoned conspecific juveniles in a nearby nest. We used molecular techniques to confirm these nestlings were unrelated to the adults that fed them. The most likely explanation for the observed behavior is that it was a mistake resulting from parental response to the begging vocalizations in the nearby nest.

Russell A. Ligon, Mark Liu, and Geoffrey E. Hill "Adoption by a Territorial Passerine," The Wilson Journal of Ornithology 121(4), 830-834, (1 December 2009). https://doi.org/10.1676/08-158.1
Received: 24 November 2008; Accepted: 1 May 2009; Published: 1 December 2009
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