Assertion: anhinga's feather | /r/HasProperty | waterproof
Facets:
Source sentences:
text: Unlike many other waterbirds the feathers of the African darter do not contain any oil and are therefore not waterproof.
text: Like the Cormorant, the Anhinga doesn’t have waterproof feathers.
text: The Anhinga, or snake bird, has no waterproof feathers which allows him to easily dive after his prey underwater.
text: Unlike other water birds the feathers do not contain any oil and therefore aren’t waterproof.