THE WORLD'S BIRDS. 



169 



Gray Touracou, or Quay-bird (Schizorhis concolor), 

 detested by sportsmen for its habit of alarming 

 game. Touracous are called Loories at the Cape. 



TROGONS (Trogonida}. 



DIAGNOSIS. Pair -toed birds, with the outer toe of each 



pair shorter than the inner. 

 SIZE. From that of a pigeon to that of a lark. 

 FORM. Bill short, stout, with the outlines curved, 



Head and foot (from the inside) of Trogon. 



and corner of mouth below eye ; feet small, with 

 short shanks, the first and second toes turned back- 

 wards, instead of the first and fourth, as usual in 

 pair-toed birds ; hence the outer toe of each pair 

 is the smallest, unlike what is found in the others. 

 Wings moderate, with narrow, curved, stiff quills. 

 Tail long, with the feathers squared at the tips. 



PLUMAGE AND COLOURATION. Plumage soft and usually 

 brilliant, often showing metallic green or bright 

 red, and also fine black-and-white pencilling. Often 

 a sexual difference, but no seasonal change. 



YOUNG. Helpless, and fed by parents ; but they are 

 little known. 



