LIFE HISTORIES OF MICHIGAN BIRDS.—PART I. WATER BIRDS. 
Order I. PYGOPODES.*—Diving Birds. 
KEY TO FAMILIES. 
A. Tail-feathers wanting; toes conspicuously lobed (Fig. 
3) the nails of the anterior toes very broad and 
flat.—Family 1, Colymbide, Grebes, page 36. 
AA. Tail-feathers present but short.—B, BB. 
B.Toes four, hind toe present.—Family 2. Gaviidae— 
Loons, page 40. 
BB. Toes three, hind toe wanting.—Family 3, Alcide 
—Auks and Murres, page 43. 
Fig.3. Foot of Grebe. 
*The classification and nomenclature adopted are those of the third edition, 1910, of the Check-list 
of North American Birds prepared for the American Ornithologists’ Union, and the number in paren- 
theses following the scientific name is the species number used in the second edition of that check-list 
(1895). The number preceding each species name is the serial number of the present list. For an 
outline of the classification used those interested may consult Appendix No. 5 near the end of the 
volume. 
