William H. Carr, A Manual of Bird Study
“ To name the injurious insects that form this Woodpecker’s diet would take a long list. “Every stroke with which he knocks at the door of an insect’s retreat sounds the crack of doom. He pierces the bark with his beak, then with his barbed tongue drags forth an insect, and moves on to tap a last summons on the door of the next in line.” ”
