Toucan with half an upper mandible

Black-mandibled Toucan (Ramphastos ambiguus abbreviates). Dominical, Costa Rica. March.

Black-mandibled Toucan (Ramphastos ambiguus abbreviates). Dominical, Costa Rica. March.

A third bird this week with less than a full complement of parts! This Black-mandibled Toucan has lost about half of its upper mandible. This can occur during fighting for territory or over a potential mate and must have consequences for food gathering and effective preening. You can read a remarkable story about  engineering a prosthetic mandible for a toucan here.

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