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01 October 1970 Comments News and comment These are largely unchecked reports, not authenticated records This report summarises the records for September 1970 and, unless otherwise stated, all dates refer to that month. While an anticyclone persisted over the Azores until 17th, a series of depres...

News and Comment

01 October 1970 Comments News and comment Annual Conference The Annual Conference of the British Trust for Ornithology was held at the Hayes Conference Centre, Swanwick, Derbyshire, from 4th to 6th December 1970, and the wide range of subjects discussed demonstrated the many-sided outlook of the...

Reviews

01 October 1970 Comments Reviews ...

Notes

01 October 1970 Comments Notes ...

British bird-photographers. 13. Pamela Harrison

01 October 1970 Comments Main paper ...

Numbers and distribution of Long-tailed Ducks wintering in northern Europe

01 October 1970 Comments Main paper During the last 25 or 30 years the Long-tailed Duck Clangula hyemalis has decreased considerably as a breeding species in Scandinavia and is stated to have done so also as a winter-visitor in the southern Baltic (Curry-Lindahl 1957, 1958, 1959, i960). In ...

Direct effects of rain on birds: a review

01 October 1970 Comments Main paper The direct effects of rain on birds is a subject to which no more than passing attention has yet been given. This review is an attempt to summarise the scattered information in the literature and to draw some general conclusions. It is concerned particula...

Post-fledging behaviour of Choughs on Bardsey Island

01 June 1962 Comments Main paper T H E C H O U G H S {Pyrrhocorax pyrrhocorax) of Bardsey Island, off the coast of Caernarvonshire, have been a constant source of interest since the bird observatory opened there in 1953. O n e or two pairs have nested in most years and forty-seven young ...

Robin recaptures on Fair Isle

01 June 1962 Comments Main paper O N F A I R ISLE, Shetland, it is the normal practice to weigh all migrant birds at the time they are first trapped, and at any subsequent recaptures. The information is stored in a card-index, with all the data for each individual on a single card. In th...

Albinism and melanism in birds

01 June 1962 Comments Main paper T H E STUDY OF heterochtosis or colour variations in the plumage of birds is a subject that the majority of field ornithologists either ignore entirely or regard with only mild curiosity. In the early years of the present century and before that, however,...

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