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Is this some kind of Thrasher? Arizona last March


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2 hours ago, Hasan said:

I imagine that's a bill deformity.

The primary reason that the bill looks curved is that the maxilla is longer than the mandible. That is caused by the two tips not quite meeting right, thus the maxilla hasn't been worn to normal shape as has the mandible tip. This is not infrequent in the species: ML233627291 Great-tailed Grackle Macaulay Library

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