Assertion: tailed gull | /r/HasProperty | nocturnal
Facets:
Source sentences:
text: The swallow-tailed gull, native to the Galapagos Islands, is actually nocturnal—which is far from the norm.
text: The Swallow-tailed gull (Creagus furcatus) is a nocturnal foraging seabird that breeds mostly in the Galapagos Islands; a few pairs nest on Malpelo Island off Colombia (Harrison 1983).