CHAPTER XXII. 



TRUMPETER SWAN (CYGNUS BUCCINATOR). 



Adult Male : Bill longer than the head, higher 

 than broad at the base, depressed, and a little 

 widened towards the end, rounded at the tip. 

 Upper mandible with the dorsal line sloping ; the 

 ridge very broad at the base, with a large de- 

 pression, narrowed between the nostrils, convex 

 towards the end ; the sides nearly erect at the 

 base, gradually becoming more horizontal and con- 

 vex towards the end. 



Head of moderate size, oblong, compressed ; 

 neck extremely long and slender ; body very 

 large, compact, depressed. Feet short, stout, 

 placed a little behind the centre of the body ; 

 legs bare an inch and a half above the joint ; 

 tarsus short, a little compressed, covered all round 

 with angular scales, of which the posterior are 

 extremely small. Hind toe extremely small, with 

 a very narrow membrane. 



A portion of the forehead about half an inch in 



SS4 



