Alice Hall Walter, Wild Birds in City Parks
“ It is, of course, neither a warbler nor a vireo for these birds, although active and frequenting trees, arrive much later in the spring. Provided it does not brace its tail and climb up and around the trunk of the tree it is not likely to be a woodpecker, because the motions of woodpeckers are too characteristic to be mistaken. In similar manner, although sparrows and juncos may have arrived, it is probably neither of these since it does not feed upon the ground, while its size precludes the possibility of its being any bird larger than the English Sparrow. ”
