covert feather
1 of 1noun/ˈkoʊvɚt ˈfɛðɚ/
Forms:covert feathers
1
a type of small, fluffy feather that covers the base of a bird's larger flight feathers, providing insulation and helping to streamline the bird's wing shape
Synonyms:
a type of small, fluffy feather that covers the base of a bird's larger flight feathers, providing insulation and helping to streamline the bird's wing shape