head mottled with leaden-grey; most of the wing-coverts have towards the
end a spot of greyish-black, and the quills, large coverts, and tail-feathers
are similarly marked, the markings on the tail forming a subterminal bar.
THE COMMON AMERICAN GULL.
4"Larus zonorhynchus, Richardson.
PLATE CCCCXLVL— Adult Male, and Yodng in winter.
No country can afford greater facilities for the migration of water-birds than the United States of America. Even the Gulls are enabled to traverse their whole extent from north to south, and in the contrary direction, with- out suffering from want of food or of proper resting places. The Gull that has been bred in Labrador, or still farther north, can reach the Gulf of Mexico without being seriously incommoded by the storms that now and then rage along the Atlantic coast. The broad waters of the St. Lawrence leads it to our great lakes, from which hundreds of streams conduct it to the head waters of the Ohio or the Mississippi, by following the windings of which it at length arrives in the warm regions of the Mexican Gulf, on whose waters the traveller can spend the winter. That these advantages are embraced by many species of Gull, there can be no doubt; and should you, as I have done, repeatedly visit our broad lakes, or the great rivers just men- tioned, you would find there, at particular seasons, not only this species, but several others, as well as various kinds of Terns, but none of the genus Lestris. Lake Erie supplies with food the Lanes marinus, L. argentatus, L. atricilla, and some others, as well as the Great, the Arctic, the Roseate, and the Black Terns, all of which pass at times over to the Ohio, and from thence to the ocean. During these inland movements, the birds seem to be peculiarly attracted by certain places, at which they remain for awhile. Thus, at the Falls of the Ohio, some species remain for weeks, and wherever much shipping occurs on that river or the Mississippi, Gulls are sure to be seen gleaning the garbage that has been thrown overboard, or seizing such fishes as rise incautiously to the surface of the water. In the months of September and October, Gulls and Terns might almost be said to abound on
