1G6 FALCOXID^E. 



Outer web of fifth primary notched ; tail uniform above. 



Adult male. Head creamy white, streaked with blackish brown ; wing- 

 coverts, secondaries, tertials, and tail ash-grey. 



female. Head huffish or creamy white, streaked with blackish brown ; 

 creamy-white margin on shoulders of wings. General colour dark brown ; 

 below chocolate-brown ; tail brown. 



Young of the year. Dark brown ; head chocolate-brown. In the next 

 plumage the head, chin, and throat vary from rufous to creamy white, 

 more or less streaked with blackish brown ; but in first plumage some are 

 said occasionally to have the head creamy white ; irides blackish. Length 

 21-23 inches. 



180. Circus cyaneus (Linnaeus). The Hen-Harrier. 



Moorish. Bou hasan (Father of beauty). Spanish. Cenizo, 

 Ave de San Martin. 



According to Favier this " is the least common of the Harriers 

 near Tangier, being seldom met with." 



On the Spanish side of the Straits, though a resident bird, the 

 Hen-Harrier is most frequently seen in winter ; but their 

 numbers fluctuate greatly. We observed more in the winter of 

 1871-72 than at any other time, particularly about Casas Viejas, 

 seldom, however, coming across an old male. 



Outer web of fifth primary notched. 



Adult male. Pale slate-grey above ; throat and chest bluish ash ; upper 

 tail-coverts and underparts below centre of breast white. 



Female. Above brown ; hind neck streaked with whitish ; below whitish 

 brown ; breast streaked with dark brown ; tail brown, with five bands of 

 darker brown. 



Young. Like female, but marked with rufous on back ; and the bars on 

 the tail are rufous. Length 21| inches. 



181. Circus swainsoni, Smith. The Pale-chested Harrier. 



Favier states that this species occurs on passage in the environs 

 of Tangier in April. In the Norwich Museum there is a specimen 

 labelled " Tangier." 



On the Spanish side it is not uncommon in spring, and 

 doubtless breeds near Seville, where Lord Lilford was the first to 

 obtain it in 1872. 



