Assertion: laughing gull | /r/HasProperty | l. atricilla
Facets:
Source sentences:
text: The laughing gull (L. atricilla), a medium-sized bird with a black head, red bill, and red feet, often gives vent to a strident, laughing call.
text: …“hooded” gulls, exemplified by the black-headed gull (Larus ridibundus) and laughing gull (L. atricilla), have a striking “swoop-and-soar” aggressive flight display, and a ground display (called the “forward”)
text: The laughing gull (L. atricilla), a medium-sized bird with a black head, red bill, and red feet, often gives vent to a strident, laughing call.