Assertion: gull's nest | /r/CapableOf | weigh up to 50 kilograms
Facets:
value: in weight
type: OTHER
Source sentences:
text: Another unique feature of the Hamerkop is that, although they are only medium-sized birds, they have huge nests that can measure over 2 metres in depth and width and weigh up to 50 kilograms in weight.