. Michigan bird life : a list of all the bird species known to occur in the State together with an outline of their classification and an account of the life history of each species, with special reference to its relation to agriculture ... . Birds,page 389. LIFE HISTORIES OF MICHIGAN BIRDS.—PART I. WATER BIRDS. Order I. PYGOPODES.*—Diving Birds. KEY TO FAMILIES. A. Tail-feathers wanting; toes conspicuously lobed () the nails of the anterior toes very broad andflat.—Family 1, Colymbidse, Grebes, page 36. AA. Tail-feathers present but short.—B, BB. four, hind toe present.—Family 2,
. Michigan bird life : a list of all the bird species known to occur in the State together with an outline of their classification and an account of the life history of each species, with special reference to its relation to agriculture ... . Birds,page 389. LIFE HISTORIES OF MICHIGAN BIRDS.—PART I. WATER BIRDS. Order I. PYGOPODES.*—Diving Birds. KEY TO FAMILIES. A. Tail-feathers wanting; toes conspicuously lobed () the nails of the anterior toes very broad andflat.—Family 1, Colymbidse, Grebes, page 36. AA. Tail-feathers present but short.—B, BB. four, hind toe present.—Family 2, Gaviida—Loons, page 40. BB. Toes three, hind toe wanting.—Family 3, Alcida—Auks and Murres, page 43. Fig. 3. Foot of Grebe. *The classiflcation and nomenclature adopted are those of the third edition, 1910, of the Check-listof North American Birds prepared for tlie American Ornithologists Union, and the number in paren-theses following the scientific name is the species number used in the second edition of that checli-list(1895). The number preceding each species name is the serial number of the present list. For anoutline of the classification used those interested may consult Appendix No. 5 near the end of 36 MICHIGAN BIRD LIFE. Family 1. COL —Grebes. KEY TO SPECIES. A. Wing more than 5 inches (and less than 9).—B, Wing more than 7 inches.—C, CC. C. Culmen 2^ inches or more.—-Western Grebe. (Appendix.)CC. Culmen less than 2^ inches.—Holboells Grebe. No. 1. BB. Wing less than 6 inches.—D, DD. D. Bill compressed, deeper than wide at base.—Horned Grebe. No. Bill depressed, wider than deep atbase.—Eared Grebe. (Appendix.) AA. Wing 5 inches or less.—Pied-billed Grebe. No. 3. 1. HolboeUs Grebe. Colymbus holboelli (Rcinh.). (2) Synonyms: Red-necked Grebe.—Podicops holbellii, Reinli., 1853.—Podiceps many authors.—Podiceps greisegena var. holboelli, Coues, 1872. Largest of the so-called Hell-divers,
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