( 536 ) 



The nest was on an overhanging rook on Djebel Bon Ghezal, high nji ami 

 overlooking the desert, bnt only about 25 feet above a ledge of the rock wliich 

 was easily accessible. The female was shot while leaving the nest. Another nest 

 was seen on Djebel Metlili, at an emirnions heiglit and ([nite inaccessible. Most 

 specimens received from Riggenbach from Haha, Mogador, and near Mazagan, in 

 Morocco, are underneath of a yellowish cream-colonr or rnfous, witli narrower or 

 wider dark rnfous stripes, thighs and flanks cinnanion-rnfous ; but an adult bird 

 bought at Algiers has the entire under-surface ciuniunon-rufous, and another evideiitlv 

 younger bird with barred tail has the underside (piite white, including flanks and 

 thighs, broadly striped with brown. 



158. Milvus korschun korschun (Gm.). 



We cannot see our way to separate the N.W. African form of the "Black 

 Kite" from the S.E. and Central European one. 



This species is common in Algeria, both as a migrant and nesting, but it, 

 appears to be absent in the winter. It nests mostly on clifts and rocks. We 

 have received a number of eggs from the neighbourhood of El Kantara. They 

 are of the usual type. We do not remember having seen the species at Touggourl ; 

 Koeuig shot it there, bnt probably on migration ; the palm trees not offering 

 o])portunities for nesting, and there being no clitl's, these birds can hardly breed 

 there. At Ghardaia, however, they were very numerous in April ; numbers could 

 be seen round the slaughtering-pLices near the town. In the winter not a single 

 Kite was seen there by Mr. Ratcliffe. 



ITiO. Circus aeruginosus (L). 



The Marsh-Harrier was seen in great numbers, and a female was shot on 

 Lake Fetzara February 2, 1911. Single ones were not unfrequently seen near 

 Biskra late in February and March. When we visited Lake Fetzara in May lUiili 

 we did not see this species. 



Judging from these observations, this bird passes through Algeria as a 

 migrant and winters in suitable localities, but it is doulitful if it breeds there now, 

 though Loche stated that it bred in marshy districts. 



UiO. Circus macrourus (Gm.). 

 A jjiid iif passage, and perhaps the commonest of its genus. It aj)|iears also 

 to winter in small numbers. A beautiful male was shot at Biskra on February 22, 

 191 1, and a female at Laghouat on April :i. 



101. Circus pygargus (L.). 

 (Montagu's Harrier.) 



This bird is evidently rare in Algeria and Tunisia. Whitaker calls it " far 

 from common in Tunisia," Erlanger never saw it, but obtained it from Bl.inc, 

 Koenig only saw and sliot one male. 



We also shot only one single male near Biskra, April l',i, I'JOS, and distincljy 

 recognised it on one other occasion in the same place. 



