Assertion: dark tern | /r/CapableOf | show notable dim plumage
Facets:
Source sentences:
text: Black Tern animal groups, the dark tern is unmistakable throughout the rearing season, when it shows the notable dim plumage for which it is named.
text: animal groups, the dark tern is unmistakable throughout the rearing season, when it shows the notable dim plumage for which it is named.