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September and October report

01 February 1976 Comments News and comment The weather in early September was mainly anticyclonic but an airstream from the west and south-west took over, being particularly prominent from mid-month with gale force winds on several occasions. In October the picture changed, with many warm, dry ...

News and Comment

01 February 1976 Comments News and comment Appointments to the Scientific Authority for Animals The Secretary for the Environment has appointed twelve members of the Scientific Authority for Animals to give advice on the Convention on International Trade in Endangered Species of Wild Fa...

Reviews

01 February 1976 Comments Reviews Watching Sea Birds. By Richard Perry. Groom Helm, London, 1975. 230 pages; 16 line-drawings; 2 maps. £4.75. This is not really a new book but a reprinting of parts of two of the author's earlier books, both of which--Lundy Isle of Puffins (194...

Notes

01 February 1976 Comments Notes Peregrine and Raven possibly contaminated by Fulmar oil With reference to R. A. Broad's paper on Fulmar Fulmarus glacialis oil contamination (Brit. Birds, 67: 297-301), the following observations of possible oiling may be of interest. On 10th J...

The flight behaviour of Starlings at a winter roost

01 February 1976 Comments Main paper Co-ordinated flying displays by flocks of Starlings Sturnus vulgaris are often a feature at pre-roosting areas, but the most spectacular displays occur at the main roost, when very large numbers of birds fly together, prior to final roosting. On many e...

Laying dates of four species of tits in Wytham Wood, Oxfordshire

01 February 1976 Comments Main paper It has been argued by Perrins (1970) that laying a large clutch imposes a considerable extra load on the food-gathering abilities of a small bird. From this, he suggested that the date at which individual birds in a population begin laying is related t...

Notes

01 July 1941 Comments Notes ON May 18th, 1924, my father and I found the nest of a Siskin (Carduelis spinus) at Acharacle, Argyll. It was about twenty feet up on the spreading bough of an exotic fir (species not recorded) in a large garden. When my father climbed to it, both birds ...

Report on the effect of the severe winter of 1939-40 on bird life in the area within 20 miles of London

01 July 1941 Comments Main paper THIS report is intended to supplement the " Report on the effect of the severe winter of 1939-40 on bird-life in the British Isles " which has already appeared in this journal (antea, Vol. xxxiv, pp. 118, 142), and details which were given there, such as ...

Intelligence tests with Tits

01 July 1941 Comments Main paper the idea of testing the ability of birds to solve problems, I carried out some experiments in February, 1941, which seemed to need a definite amount of intelligence for their solution. My subjects were a pair of Blue Tits (Parus c. obscurus), and a pair o...

The Diving Habits of Ducks and Grebes

01 July 1941 Comments Main paper an opportunity has occurred during the last few years we have timed the dives of two or more species of diving birds feeding together at the same place and working at the same depths at Lisvane Reservoir, near Cardiff. Comparing the results thus obtained ...

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September and October report

News and Comment

Reviews

Notes

The flight behaviour of Starlings at a winter roost

Laying dates of four species of tits in Wytham Wood, Oxfordshire

Notes

Report on the effect of the severe winter of 1939-40 on bird life in the area within 20 miles of London

Intelligence tests with Tits

The Diving Habits of Ducks and Grebes

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