Assertion: black swan's head | /r/HasProperty | light grey
Facets:
value: often
type: DEGREE
value: entirely
type: DEGREE
Source sentences:
text: Immatures of both subspecies are white mixed with some dull grey feathering, mainly on the head and upper neck, which are often entirely light grey; their first-summer plumage is quite white already, and in their second winter they moult into the adult plumage.
text: Immatures have a white plumage mixed with some dull grey mostly on the head and upper neck, which often are entirely light grey.