60 AUKS, ML'RRES, AND PUFFINS.

breeding in North Ameriea from New Brnnswiek and Manitoha northward, and migrating irregularly southward as far as South (‘arolimL

Washington, rare W. Y. Loin.r lsland, eommon 'l‘. \’., rare W. \'., Oct. to May. Sing Sing, casual T. V. Cambridge, one instant-e, (let.

Just, a slight depression in the ground within a few feet of the water. Egg/S, two, grayish olive~hrown, sometimes tinged with green and spotted with blaekish, 2'50 x 1‘75.

This is a more northern species than L'I't'lmlor imbor, which it doubt- less closely resembles in habits.

FAMILY ALCIDI‘E. AUKS, MURRES, AND PL'FFINS.

This family contains about thirty species, confined entirely to the northern parts of the northern hemisphere. Nearly all of these are found in North America, most of them, however. on only our Pacific coast. \Yithout exception they are maritime birds, passing the greater part of their lives on the open sea. They nest in colonies, sometimes in enormous numbers, generally upon rocky, precipitous shores. Their progress on land is ‘low and awkward; but they are. as a rule, strong fliers, and accomplished swimmers and divers. Unlike the Grebes and Loons they use their wings in diving. Their food consists of fish, crustacea, and other forms of sea life.

KEY TI) Tm; SPECIES. I. Bill under ‘75 . . . . . . . . . . . . . . . . . 34. Dovizknc. 11. Bill over 'TB. 1. Depth ot‘hill at nostril over '0". a. Bill yellowish, depth at nostril over 1110. it. l’t'rrtx. 3/1. LARGEABILIJ'ID Pt‘rrix. 7). Bill hlaek. depth at nostril under 1'00 . . 3;). lt’azoic-nlMJA) A111. 2. Depth ot'hill at nostril under 410. A. Wing-eoverts white or tipped with white. a. Greater \viiig—ezn'erts entirely white . 2?. Mann’s Gt‘ILIJCMoT. II. Basal halfot'greater wing-coverts black. '17. BLM‘K Gl'lLl-ICMU’I‘. If. No white on \ving—eoverts. a. Bill overl‘lifl . . . . . . . . . . . . . . 30. “Fame. 6. Bill under 1'th . . . . . . . . . 81. But‘xsieu‘s Mrmua.

13. Pratercula. arctica. (Linn) l’l‘FFIN : REA PARROT (see Fig, 5m). At]."1.lillL‘r parts, wings, tail. and foreneek lilaekish. hrowner on the head and threneek: nape, with a narrow grayish eollar: sides ot' the head and ”trout; white. sometimes washed with grayish; hreast and helly white. (”I‘L'eding birds have the hill larger and hrighter. and a horny spine over Ill" “‘l l“, 1300, \V., 6‘10; Tan, 1'05; B., 1 ; depth 01' B. at hase, (in winter), 1'5”.

Ii’anye‘.—“ Coasts and islands of the North Atlantic, hreeding on the North American coast from the Bay of Fundy northward " (A. 0. LI), Migrazcs southward in winter, rarely to Long’ Island.