Assertion: mallard's feather | /r/HasProperty | old
Facets:
Source sentences:
text: After the breeding season, male mallards enter a period of eclipse plumage when they are molting their old feathers.
text: After the breeding season, male mallards enter a period of eclipse plumage when they are molting their old feathers.
text: After the breeding season Mallards moult, or shed old feathers, into what is known as an eclipse plumage.