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Simultaneous Watch for migrant Swifts, May 11th, 1947

01 May 1948 Comments Main paper IN the spring of 1947 the British Trust for Ornithology invited as many as possible of its members and others interested to undertake a simultaneous watch of the movements of Swifts (Apus a. apus) on a pre-selected day--May n t h , 1947.Five similar watch...

Notes

01 May 1948 Comments Notes ON December 18th, 1946, I saw a Nutcracker (Nucifraga caryocaiactes subsp.?) about two miles west of Turners Hill, Sussex. It flew across the road and settled in a tree about 35 yards away in full view. I was able to watch the bird for about three minute...

The index of Heron population, 1947

01 May 1948 Comments Main paper THE number of heronries on which reports for 1947 were received at the Edward Grey Institute was 158, or 13 less than in the previous year. Of these 122 were in England, 6 in Wales, 11 in Scotland and 19 in Ireland. We are indebted to 63 informants, of wh...

Notes

01 March 1943 Comments Notes WITH reference to Mr. J. M. B. Brown's remarks on the breeding of the Pied Flycatcher in the Forest of Dean (antea, p. 179), it may be of interest to note that In 1935 I was informed by Mr. R. Hendrie, a student at the School of Forestry, Parkend, that h...

The age of Some More British Birds

01 March 1943 Comments Main paper paper is a sequel to that on the Blackbird (Turdus m. merula) (Lack, 1943a), and the latter should be read first as the remarks on treatment of material and general principles apply equally to the present paper, but are not repeated. It should be stressed...

Birds of Inner London

01 March 1943 Comments Main paper CARMICHAEL LOW DURING the period under review (1942) there have been two new records for Inner London, viz. the Iceland Gull (Larus glaucoides) and the Waxwing (BombycÃ¼la g. garrulus). Of other interesting occurrences the invasion of the City by Black...

The Instinctive Nature of Nest Sanitation Part- II

01 March 1943 Comments Main paper IN a previous article (antra, Vol. xxxv, pp. 120-4), attention was drawn to the fact that nest-sanitation manifests itself as an instinctive action on the part of the parent birds. The instinct to remove faeces from the area of the nest was shown to be ca...