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Jan., 1915 BIRDS OBSERVED ON FORRESTER ISLAND, ALASKA gently oozing from a case reposing on the deck of one of the outgoing fish buyer's boats. 7. Cepphus colatuba. Pigeon Guillemot. The Pigeon Guillemot was represented on Forrester and the adjacent islands by approximately five hun- dred individuals. Almost every headland was the home of a small colony, and yet their nests were surprisingly rare. A small community a short distance south of the camp was kept under observation, and judging from its experi- ence it is probable that they suffer greatly from the depredations of the fish crow. Out of six pairs only one succeeded in hatching a brood, and cracked or punctured shells indicated the culprit. Fish crows were seen on several occa- sions skulking about the cliffs after several cormorants had been disturbed and left their nests, and in one instance an egg was carried off and dropped though not eaten. The natives report that the fish crow destroys the eggs of Fig. 16. NORTH SHORE OF FORRESTER ISLAND; NESTIN(: PLACE OF THE GLACOUS-WINGED GULL AND PELAGIC CORMORANT every species of oird whose nests are exposed, and they declare it to be fully as great a pest as the eagle. The first eggs were seen during the third week in June, and the period of incubation appears to last about three weeks. 8. Uri? troille californica. California Murre. It was the general belief of the fishermen that the murre outnumbers every other species of bird on Forrester Island. This opinion appears to rest largely upon the fact that where they roost on the cliffs or float on the sea they form dense flocks often of great size. Nevertheless their nesting places are confined to a few sharply defined areas, and a careful estimate renders it probable they do not exceed fifty thousand individuals. The full population was in evidence by the last of May, though the nesting season did not commence until the latter part of July. Their food consisted almost wholly of sand launces, varied by an occa- sional shrimp or amphipo&