Assertion: peacock's wing | /r/HasProperty | closed
Facets:
Source sentences:
text: When the wings are closed, the color of the wings is black or dark brown on the underside, which makes them almost invisible if sitting among dead leaves.
text: If an adult is approached by a predator while its wings are closed, it will open them suddenly to reveal the eye spots, accompanied by a hissing sound made by rubbing its wings together.