Bradford Torrey,
Everyday birds: Elementary studies
(1901)
“ One proof that this drumming—which is indulged in by woodpeckers generally—is a true musical performance, and not a mere drilling for grubs, is the fact that we never hear it in winter. It begins as the weather grows mild, and is as much a sign of spring as the peeping of the little tree-frogs—hylas—in the meadow.The flicker’s nest, as I have said, is built in a hole in a tree, often an apple-tree. Very noisy in his natural disposition, he keeps a wise silence while near the spot where his mate is sitting, and will rear a brood under the orchard-owner’s nose without betraying himself. ”
