the.com/plumage

A bird's entire outfit, and its entire argument for getting to reproduce.

means The complete covering of feathers on a bird, especially as it displays color, pattern, and condition.

from From French 'plumage,' built on 'plume' meaning feather, which traces back to Latin 'pluma' — soft feather or down. The same Latin root quietly gave English the word 'plume' itself.

molt cycle
Most birds fully replace plumage once or twice yearly
color source
Some blues come from structure, not pigment, ever
breeding plumage
Many species grow flashier feathers only to attract mates
flamingo pink
Comes entirely from pigments in their shrimp-heavy diet
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