Assertion: robin | /r/CapableOf | come by either size
Facets:
Source sentences:
text: That means that size and color differences among populations are subtle at best; even with perfect views, we can never be absolutely certain where robins came from by either size or plumage.
text: That means that size and color differences among populations are subtle at best; even with perfect views, we can never be absolutely certain where robins came from by either size or plumage.