Assertion: starling | /r/CapableOf | raise the feathers of the head
Facets:
Source sentences:
text: Starlings signal agitation by flicking their wings, or by staring at their opponents while standing erect, fluffing their feathers, and raising the feathers of the head.
text: Starlings signal agitation by flicking their wings, or by staring at their opponents while standing erect, fluffing their feathers, and raising the feathers of the head.