National Geographic : 1948 Jun
XVI Red Mouths Gape for May Flies Brought Home by "Old Man" Canada Warbler Not a sunbeam penetrates the Adirondack forest, but the speed flash lights the gloom like day. C National Geographic Society Ektachromes by Arthur A. Allen Which Child Is Hers? Scarlet Tanager Doesn't Realize She Has Two Imposters A parasitic cowbird, unwilling to raise her brood, sneaked two eggs into the nest. Already her greedy offspring have kicked out one foster brother. Young tanager (middle) has a yellow mouth lining; the foundlings, pink.