Nov., 1919 A LIFE HISTORY OF THE NORTHERN BALD EAGLE 189

feathers of the wings begin to molt first. I had no means of determining the ex- act length of the molting period. An alarm note is the commonest vocal expression of this eagle during the WILLIAM SOUND, ALASKA breeding season and consists of a series of short guttural sounds uttered in quick slitcession? It always seemed to me as tho the bird was chuckling, even in spite of