Assertion: booby's bill | /r/HasProperty | blue
Facets:
Source sentences:
text: The red-footed booby is the smallest of the Galapagos boobies, with a length of 2.5 feet and a 4.5-foot wingspan, and is readily distinguished by its red feet and blue bill with red base.
text: They will then extend their wings outward and point blue bills skyward.