Assertion: albatross's bill | /r/HasProperty | white underwings
Facets:
Source sentences:
text: Similar species include Black-footed Albatross (P. nigripes), which has a uniformly sooty plumage and the much rarer Short-tailed Albatross (P. albatrus), which has a larger, heavier bill, all white underwings, a yellow wash on the nape and a white back.