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 {Trogonidce). 



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



fair 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 pencihing. Often 

 a sexual difference, but no seasonal change. 



Young. — Helpless, and fed by parents ; but they are 

 little known. 



