HEN HARRIER. 



RAPTORES. 



101 

 FALCON1DM. 



THE HEN HARRIER. 



Circus cyaneus. 



Falco cyaneus, Hen Harrier, 



Circus 



w 



Buteo 

 Circus 

 Falco 



PENN. Brit. Zool. vol. i. p. 239. 

 w w MONT. Ornith. Diet. 



M BEWICK, Brit. Birds, vol. i. p. 34. 



w w FLEM. Brit. An. p. 53. 



n SELBY, Brit. Ornith. vol. i. p. 68. 



w JENYNS, Brit. Vert. p. 89. 



n n GOULD, Birds of Europe, pt. xi. 



Busard St. Martin, TEMM. Man. d'Ornith. vol. i. p. 72. 





THE decided difference in colour between the males and 

 females of the true Harriers when adult is a subject now so 

 well understood as to require to be noticed here only as a 

 prominent illustration of one of the laws which appear to 



