GIBRALTAR. 295 
sportsman must have seen this Eagle, and noted the white 
patch on the back, alluded to by Colonel Irby (op. cit., 
P. 44). 
KESTREL, Cerchneis tinnunculus (Linn.). 
One was seen to fly into a hole in the old Moorish tower. 
SPARROW, Passer domesticus (Linn.). 
BLACK WHEATEAR, Dvromolea leucura, Gm. 
Seems to keep chiefly to the top and eastern side of the 
Rock. 
ALPINE ACCENTOR, Accentor collaris (Scop.). 
BLUE THRUSH, Petrocossyphus cyanus (Linn.). 
Rather solitary, perching upon rocks and rough ground. 
BLACK REDSTART, Ruticilla titys (Scop.). 
Favier says that the immature birds keep together (Irby, 
op. cit., 82), but the old ones are solitary. I certainly saw 
more in the adult male plumage than in the female, which 
the above may in part explain. 
BLACK-HEADED WARBLER, Sylvia melanocephala, (Gm.). 
See “ Zoologist,” February, 1875. 
BLACKCAP, Sylvia atricapilla, (Linn.). 
This warbler would not appear to winter so far south as 
some of its congeners, 
