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 Nov., 1909 A LIFE HISTORY OF THE NORTHERN BALD EAGLE 193 of this as well as that of the golden eagle, in protecting their young, has been un- duly emphasized. After photographing these young birds in the nest, I lowered them to the ground in a fish basket and kept them with me for some time so that I had a good opportunity  watch the feather development. They ate heartily many times a day, but were the most avaricious set of individuals that I ever had anything to do with. When they were taken from the nest there wasa noticeable gradation in size, and the largest one immediately took advantage of this. Every time that I went to feed them he would peck and maul the other two until they stuck their heads down; then he would gobble everything in sight. I could not teach him better; and as soon as I removed him, the second largest one began to persecute the smallest one in the same way. Together the two larger ones killed the smallest one, and I think that this would probably have taken place in the nest in the natural course of events. The white natal down began to give way'to a sooty down when the birds were about three weeks old and this plumage was kept until it was replaced by the dark feathers of the immature bird. This dark immature plumage is not molted in the fall by the birds of the year but is kept at least until the following fall, so that the birds with the white heads and tails are two or more years old. ]:>alo Allo, Calbwt'a. FURTHER NOTES FROM SAN CLEMENTE ISLAND By C. B. LINTON URING 1908 I added the following species to my early list of the birds of San Clemente Island, California. (See CoI)Ol, vol. x, no. 2, p. 82.) I wish to tender my sincere thanks to Mr. Charles T. Howland, lessee of San Clemente Island; and to Mr. Robt. Howland and the "boys" of Mr. Howland's vari- ous ranches, for the many favors extended to myself and party while working this island. Gayla pacifica. Pacific Loon. A few individuals were noted during the winter months; not common. Cer0rhinca m0n0cerata. Rhinoceros Auklet. Two specimens collected. Among the skeletons strewn along the rocky beaches were several of this species. Synthliboramphus antiquus. Ancient Murrelet. During November and Decem- ber, 1908, several Ancient Murrelets were seen and two collected. Brachyramphus hypoleucus. Xantus Murrelet. One specimen, only, was secured here, December, 1908. Larus occidentalis. Western Gull. By an oversight this species was not recorded in my previous records. Common; several pairs breed near Northwest Harbor. Puffinus opisthomelas. Black-vented Shearwater. Noted near the island. Puffinus griseus. Sooty Shearwater. Noted near the island. Mergus serratot. Red-breasted Merganser. Several stragglers observed. 0idemia perspicillata. Surf Scoter. Several seen. Porzana carolina. Carolina Rail. While hunting in one of the deep canyons near Mosquito Harbor I found the partly-eaten remains of a Sora! The wings and