Sentence:  The <WSD>Pope</WSD>: This is a very singular bird; it is about the size of our widgeon, or somewhat larger, but is not quite so large as the duck: the head is large and rounded; the eyes are small, and stand forward on the head, and lower down than in the generality of birds [...] 
Meaning of the word marked with <WSD> tags:  The Atlantic puffin ("Fratercula arctica").