National Geographic : 1933 Jul
THE EAGLE, KING OF BIRDS, AND HIS KIN AFTER FIVE WEEKS IN THE NEST, YOUNG DUCK HAWKS TEST THEIR WINGS As soon as feathers began to develop, the young birds flapped their wings vigorously, often tipping themselves over in the process and sending bits of down flying in all directions. This nest is near Hanover, New Hampshire. Photographs by C. A. Proctor and B. B. Leavitt STANDING GUARD NEAR HIS NEST Duck hawks are strong and courageous, and this one, having just alighted on the nesting shelf, seems to be challenging anyone or anything to try conclusions with him. The duck hawks are the nearest American relatives of the peregrine falcons, famous hunters of the Old World.