Assertion: mallard's egg | /r/CapableOf | incubate for an average of 30 days
Facets:
Source sentences:
text: Females typically lay between 7 and 15 white-tan eggs that incubate for an average of 30 days.
text: Female Wood Ducks typically lay between 7 and 15 white-tan eggs that incubate for an average of 30 days.