Assertion: whooper swan | /r/CapableOf | pair for life
Facets:
Source sentences:
text: Whooper swans pair for life, and their cygnets stay with them all winter; they are sometimes joined by offspring from previous years.
text: Similar birds: Bewick's Swan (rare here), Mute Swan Whooper swans pair for life, and their cygnets stay with them all winter; family groups sometimes include offspring from previous years.