76 



NORTH AMERICAN BIRDS. 



d 2 . Feet always reddish. Adult: "White, the head and neck tinged 

 with buff, the shafts of the tail-feathers yellowish; remiges 

 hoary slate. Young: Above sooty brown, the quills and tail- 

 feathers more hoary ; head, neck, and lower parts light smoky 

 gray. (Plumage extremely variable, scarcely two specimens 

 being alike.) Length about 27.00-30.00, wing 14.00-16.10 

 (15.04), tail 7.75-10.65 (8.93), culmen 3.05-3.50 (3.26), depth 

 of bill at base .95-1.20 (1.07). Eggs 2, 2.56 X 1-80. Sab. 

 Intertropical seas, north to Florida and Lower California. • 



. 116. S. piscator (Linn.). Red-footed Booby. 

 a 2 . Lower jaw (i.e., malar region), together with sides of chin and throat, densely 

 feathered. (Subgenus Dysporus.) 



Legs and feet blackish. Adult: White, the remiges dusky brown, the 

 head and neck above washed with buff. Young : Dusky, everywhere 

 streaked or speckled with white. Downy young : Entirely covered with 

 fluffy yellowish white down. Length 30.00-40.50, wing about 19.50, tail 

 10.00, culmen 4.00. Eggs 1, 3.00 X 1.92. Sab. Coasts of the North At- 

 lantic, south, in winter, to the Gulf of Mexico and northern Africa; 

 breeding from Nova Scotia and British Islands northward. 



117. S. bassana (Linn.). Gannet. 



Family ANHINGID^E.— The Anhingas. (Page 73.) 



Genera. 

 (Characters as given for the Family) Anhinga. (Page 76.) 



Genus ANHINGA Brisson. (Page 76, pi. XIX., fig. 3.) 



Species. 



Adult male in summer : Head, neck, and body glossy greenish black ; other 

 parts deep black, the scapulars and lesser wing-coverts beautifully spotted (longitu- 

 dinally) with light silvery gray ; exposed surface of middle and greater wing- 

 coverts light silvery gray; tail broadly tipped with pale brown, passing into 

 whitish terminally ; sides of neck and hinder part of head, ornamented with length- 

 ened, loose-webbed, or hair-like feathers of a dirty whitish or pale grayish lilac 

 color; feathers of hind-neck also elongated and hair-like, forming a sort of mane 

 but black. Adult male in winter : Similar, but lacking all the elongated feathers of 

 bead and neck. Adult female in summer : Head, neck, and breast grayish buff, darker 

 on top of head, lighter on breast, where bordered below by a band of chestnut next 

 to the black of the belly ; sides of upper neck with a few whitish loose-webbed 

 feathers; otherwise, colored like the male. Adult female in winter : Similar to sum- 

 mer plumage, but lacking entirely any ornamental, or lengthened, feathers on head 

 or neck. Young in second year (?) : Similar to adult female, but lower parts duller 



