#Beak

From Popsci RSS Feed: Bruce is missing his upper beak, but it has not stopped him from dominance

A kea parrot in New Zealand who lost the top part of his beak when young has developed a new way to fight other males that has made him unbeatable.

An injured kea with just half a beak has used what's left as a weapon that gives him dominance over a captive colony of the birds

Kea parrot missing his upper beak "has rewritten what disability means for behaviorally complex species."