bastard wing
noun1
A tuft of feathers borne by the bony thumb-like structure in a bird's wing; alula.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A tuft of feathers borne by the bony thumb-like structure in a bird's wing; alula.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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