Assertion: sparrow's wing | /r/AtLocation | skin
Facets:
Source sentences:
text: Also called remigesremigesREM-i-jeezthe flight feathers on the wing that are attached to bone rather than only to skin, these feathers are asymmetric with a shorter, less flexible leading edge that prevents midair twisting.
text: The primary and secondary wing feathers, or remigesremigesREM-i-jeezthe flight feathers on the wing that are attached to bone rather than only to skin, permit birds to take to the skies.