iO BLACK-AND-WHITE BIRDS. 



TERNS. — White sea-birds with black caps, gray backs, and 

 deeply forked tails ; but because white in all other parts described 

 under 'White Sea-Birds.' 



BLACK-HEADED GDLL.~16 inches. A gull with head en- 

 tirely black in summer; but because white in all other parts 

 except the gray wings, described under 'White Sea-Birds.' 



LESSEE BLACK-BACKED GULL.— 22 inches. A sea-gull, 

 black on back and wings ; but because white in all other parts, 

 described under 'White Sea-Birds.' 



GREAT BLACK-BACKED GULL.— 30 inches. As the pre- 

 ceding bird. 



BLACK GROUSE.— 15-22 inches. The male is black, with 

 large divided tail and red wattle, but white beneath the wings 

 and the root of the tail ; it has also a white wing-bar. A percher 

 in woods in Scotland and north of England, but feeding on moors 

 and in stubbles. See under ' GROUSE.' 



TUFTED DUCK.— A black diving duck with a white patch 

 on the wing, and the sides and- under parts of the body white : 

 vide ' Diving Ducks. ' 



GREAT NORTHERN DIVER.— A' 33 inch marine diver, with 

 head and long neck black, the latter with two white-streaked 

 collars, the upper parts variegated viith black and white, and the 

 under parts white. Being duck-like in form, it has been described 

 under 'DuCK-LIKE DiVING BiRDS.' 



SMEW. — A 17-inch marine diver, mostly white, but with face, 

 hind-head, and back black, and wings mixed black and white. 

 Being duck-like in form, it has been described under ' Duck-like 

 Diving Birds.' 



