10 WHISTLING SWAN. 



elongated. They subsist chiefly on seeds, roots, and 

 aquatic plants. Their manners are graceful and 

 elegant, and they form a principal ornament in many 

 of our parks and rivers. 



WHISTLING SWAN. 



r. . 



(Cygnus ferus,) 



CY. rostro semicylindrico atro, cerdflavd, corpore alba. 



Swan with a semicyliiidric dark-coloured beak, yellow cere, and 



white body. 



Cygnus ferus. Rail, Syn. 136. A. Briss. Orn. 6. 292. pi. 28. 

 Anas Cygnus (ferus). Linn. Syst.Nat. 1. 194. 

 Anas Cygnus. Gmel. Syst. Nat, 1. 501. Lath. Ind. Orn. 2. 833. 

 Cygne sauvage. Buff. Hist. Nat. Ois. 9. 3. Buff. PL Enl. 

 Cygne a bee jaune, ou sauvage. Temm. man. d'Orn. 522. Id. 



2 Edit. ii. 828. 



Le Cigne a bee noire. Cuv, Reg. Anim. 1. 529. 

 Wild Swan. Penn. Brit. Zool. 2. 264. Edvo. Glean.pl 150. 

 Whistling Swan. Penn. Arct. Zool. 2. 469. Lath. Gen. Syn. 



6. 433. Lath. Syn. Sup. 272. Syn. Sup. ii. 341. Lew. Brit. 



Birds, 6. pi. 236. Wale. Syn. 1. pi. 55. Mont. Orn. Diet. 



1. and Sup. Beta. Brit. Birds, 2. 272. Linn. Trans. 10. 



105. pi. 12. f. 12. (trachea.) Bingl. Anim. Biog. ii. 319. 



THE Whistling Swan is nearly five feet in length : 

 its beak is black, covered at its base by a yellow cere, 

 which is continued backwards, and surrounds the 

 eyes : the irides are brown : the entire plumage is of 

 a perfect white, except the head and nape, which are 

 very slightly shaded with yellowish : the legs are 



