Assertion: booby's nostril | /r/HasProperty | closed
Facets:
value: permanently
type: MANNER
Source sentences:
text: Because of this habit of diving for their food, the booby’s nostrils are permanently closed.
text: Its external nostrils are closed to allow for plunge-diving, but it has developed secondary nostrils beside the mouth which are automatically covered by flaps when it plunges.
text: The nostrils are inside the bill and can be closed to prevent water entry; the eyes are protected by strong nictitating membranes.
text: Since the blue-footed booby preys on fish by diving headlong into the water, its nostrils are permanently closed, and it has to breathe through the corners of its mouth.