Audubon observed these birds in great numbers in the Bay of Fundy. "The rocky shores of the islands on which I saw them breeding," says this writer, "are covered with multitudes of sea-urchins, having short greenish spines, which give them the semblance of a ball of moss. At low water, the Herring Gulls frequently devour these animals, thrusting their bill through the shell and sucking its contents. They also take up shells into the air and drop them upon the rocks to break them. We saw one that had met with a very hard mussel, take it up and drop it three times in succession before it succeeded in breaking it, and I was much pleased to see the bird let it fall each succeeding time from a greater height than before." While on Whitehead Island, in the Bay of Fundy, Audubon saw numbers of the nests of these birds on fir-trees, some being placed near the top, others on the middle or lower parts of the trees. He was informed by the proprietor of the district that in his memory these Gulls had built their nests on moss, on open ground, but their nests having been robbed and the birds otherwise annoyed, they had betaken themselves to the thickest parts of the woods, hoping that by placing their nests on the trees they would be out of the reach of their arch-enemy, man. The nest of the Herring Gull, which is frequently placed on ledges of rocks, is usually formed of grass, or any other vegetable matter that may be at hand. The eggs are laid about May: these vary much both in size and colour. The young remain in the nest until they are partially fledged, but at once quit it if alarmed, and frequently take to the water if pursued. THE LARGE OR GLAUCOUS WHITE-WINGED GULL.