Assertion: gull's bill | /r/CapableOf | apply waxy secretions
Facets:
value: from the uropygial gland
type: OTHER
Source sentences:
text: The bill is used to brush away foreign particles and to apply waxy secretions from the uropygial gland; these secretions protect the feathers' flexibility and act as an antimicrobial agent, inhibiting the growth of feather-degrading bacteria.