23 



varying greatly in size, and often of rather brilliant plumage ; the 

 Pelicans (family Pelecanidce), of few species of very large size, 

 widely distributed, and remarkable for the large pouch under the 

 bill, in which they transport fish ; the Frigate Birds or Man-o'- 

 War Birds (family Fregatidce), two semitropical species, remark- 

 able for their graceful form, unequalled powers of flight, and the 

 iridescent tints of plumage in the adult males. 



Order X, Chenomorphcc^ includes the Horned Screamers (family 

 AnhimidcB = Palamedeidcz), the numerous family of Ducks, Geese, 

 and their allies {Anatidce), and the Flamingoes (family Phoenicop- 

 teridcB). Each of these groups, however, differs so much from 

 either of the others, and from' all other birds, that it is sometimes 

 still made a distinct order ; they certainly widely differ in both 

 habits and external appearance, as they do likewise in anatomical 

 structure. The Horned Screamers (see Case J) are restricted to 

 tropical America, and number only three species referable to two 

 genera. They are large birds, living in colonies in swamps and 

 brackish lagoons ; they are formidably armed with horny spines 

 on the wings, while one species has a long spiny horn on the head. 

 They swim well, and also delight in soaring high in the air. 

 Their screaming call-notes may be heard miles away. 



The Duck tribe includes not only the numerous kinds of sea 

 and river Ducks and Teals, but also the Geese and Swans, the 

 family forming several well-marked subfamilies. The species 

 number nearly two hundred, and the family has numerous repre- 

 sentatives in all parts of the world. (See Cases E, J, L, and M.) 



The Flamingoes (sometimes ranked as an order, OdontoglosscB) 

 have a somewhat Duck-like beak, and the long neck and legs of 

 the Storks and Herons, with each of which groups they have at 

 different times been associated. They are essentially long-legged 

 Ducks. They are confined to the tropical and semitropical parts 

 of the world, and altogether number about seven species, one of 

 which extends its range northward in our own country to Florida. 

 (See Cases E, J, and M.) 



Order XI, Herodiones, includes the four families of Spoonbills 

 {Plataleidce), Ibises {Ibididcs), Storks {Ciconiidce), and the Herons 



