. Nests and eggs of North American birds. Birds; Birds. NORTH AMERICAN BIRDS. 257 be mistaken for those of the Black-billed on account of the coarseness of the nest, larger size and paler color of the eggs. However, as a rule, the nest of the Black-bill Is constructed with more care, the sticks being somewhat smaller, the catkins less numerous, and the whole woven together in a firmer manner. The eggs are smaller, less elliptical, and are of a darker green—deep glaucous-green or verditer-blue. The nest complement varies from two to five, rarely six, usually four, and they are found in all stag
. Nests and eggs of North American birds. Birds; Birds. NORTH AMERICAN BIRDS. 257 be mistaken for those of the Black-billed on account of the coarseness of the nest, larger size and paler color of the eggs. However, as a rule, the nest of the Black-bill Is constructed with more care, the sticks being somewhat smaller, the catkins less numerous, and the whole woven together in a firmer manner. The eggs are smaller, less elliptical, and are of a darker green—deep glaucous-green or verditer-blue. The nest complement varies from two to five, rarely six, usually four, and they are found in all stages of incubation, as is the case with the eggs of C. americanus. Ten specimens measure , , , , , , , , , , with an average size of A very interesting note concerning this species is made by Dr. Edgar A. Mearns in his "Birds of Hudson ;* He says: "The young are covered with curious-looking pin-feathers, which give them an appearance like that of the wire swab used in gun cleaning. The old bird is a. close sitter, and when obliged to leave the nest moves off slowly upon the branches, with wings and tail outspread. Some- times it will come quite close to the ob- server, and then utter for several min- utes a low, mournful con, coo, coo, coo, and then an outpouring of harsh, loud notes that quickly bring the mate to its side, all the while keeping its wings and tail expanded, and crouching low upon the branch. Its ordinary notes are quite commonly heard at night as well as during the ; [388. 1.] KAMCHATKAN CUC- KOO. Cuculus caitorus tcleplionus (Heine.) Geog. Dist.—Eastern Asia, casually to the Pribilof Islands, Alaska. The Siberian Cuckoo is entitled to a place in our avifauna on the strength of a single specimen having been taken by Mr. William Palmer at Northeast Point, St. Paul's Island, Alaska, July 4, 1890, and now in the TJ. S. National Museum. Noth
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