Assertion: eagle's bone | /r/HasProperty | hollow
Facets:
Source sentences:
text: A neat trick, however, is that because their bones are hollow and feathers are light, they don’t sink and can use their wings to paddle back to shore.
text: Eagles have hollow bones and fluffy down, so they can float pretty well.
text: The bulk of an eagle is its feathers; its bones are hollow and much lighter than the bones of mammals.