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1 December 2014 Observations of a Bilateral Gynandromorph Northern Cardinal (Cardinalis cardinalis)
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Abstract
We describe behavioral observations of a bilateral gynandromorph Northern Cardinal (Cardinalis cardinalis) in northwestern Illinois from December 2008 through March 2010. The bird exhibited the typical bright red color of a male cardinal on the left half of its body, and the dull brownish-gray appearance of a female cardinal on the right half. We observed the bird more than 40 days, mostly in the vicinity of bird feeders. It was never paired with another cardinal, was never heard vocalizing, and was not subjected to any unusual agonistic behaviors from other cardinals. These observations are among the most extensive of any bilateral gynandromorph bird in the wild.
2014 by the Wilson Ornithological Society
Brian D. Peer and Robert W. Motz "Observations of a Bilateral Gynandromorph Northern Cardinal (Cardinalis cardinalis)," The Wilson Journal of Ornithology 126(4), (1 December 2014). https://doi.org/10.1676/14-025.1
Received: 14 February 2014; Accepted: 1 July 2014; Published: 1 December 2014
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