Assertion: bald eagle's feather | /r/HasProperty | primary
Facets:
Source sentences:
text: Like all soaring birds, bald eagles have a hollow skeleton, relatively wide wings, and primary feathers allowing for good flight control.
text: Coverts – contour feathers found on body, usually named for their location on the bird, e.g. primary coverts
text: Flight feathers – consist of the wing feathers (the primaries and secondaries collectively called remiges) and the tail feathers (retrices)