Assertion: mallard | /r/HasSubevent | various hybrids
Facets:
Source sentences:
text: Mallards frequently interbreed with their closest relatives in the genus Anas, such as the American black duck, and also with species more distantly related, such as the northern pintail, leading to various hybrids that may be fully fertile.
text: Mallards frequently interbreed with the American Black Duck, Northern Pintail and domesticated species, leading to various hybrids; and these hybrids are actually fertile (able to produce young).