D o some Wallcreepers migrate? Recent letters by David Elias, H. G. Alexander and Guy Mountfort on the movements of the Wallcreeper Tichodroma muraria referred respectively to observations in Cyprus (Brit. Birds, 63: 393-394) and the Indo-Pakistan subcontinent (Brit. Birds, 64: 236-237, 378). It seems worth pointing out that there are also two records for North Africa and a recent one for Gibraltar. H. Vaucher reported one or more in the Rif Mountains, near Tetouan, Morocco, in May 1892, and he thought they were resident there, but this has never been fully accepted (D. A. Bannerman, 1953, The Birds of the British Isles, 2). P. A. D . Hollom (1944, Ibis, 86: 549) saw one at Constantine, Algeria, on 16th December 1943, and Sir Gerald Lathbury (1970, Ibis, 112: 25-43) recorded one on the Rock of Gibraltar in November 1966. Unless Wallcreepers breed in North Africa, which is possible, the nearest likely source of origin of the Gibraltar and Constantine birds seems to be the Pyrenees, since they have not been seen in the Sierra Nevada, in southern Spain, for many years (R. Vaughan, 1955,/for, 97: 159). Guy Mountfort (see above) considered that the 300-mile movements in the Indo-Pakistan area could best be described as altitudinal migration, but such could hardly have accounted for the Wallcreepers at Gibraltar and Tetouan which were 600 miles from the Pyrenees (though the latter could have come from the Sierra Nevada), while the one at Constantine must presumably have crossed 400 miles of sea.