Notes

01 August 1972
Comments Notes Little Gull dip-feeding over upland fields On 22nd January 1972, at Barley-in-Pendle, Lancashire, I was fortunate to observe a firstwinter Little Gull Larus minutus following a flock of 24 Black-headed Gulls L. ridibundus over the lower slopes of Pendle H...
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Recent reports

01 August 1972
Comments News and comment These ate largely unchecked reports, not authenticated records May was remarkably cold, wet and windy--altogether a month of outstandingly bad weather. A shallow depression which drifted in at the end of April brought a pleasant May Day with a light south...
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News and comment

01 August 1972
Comments News and comment Environment Conference The much-vaunted United Nations Conference on the Human Environment was held in Stockholm between 5 th and 16th June, and a great deal has already been written elsewhere about this jamboree. The conference began badly, for the U.S....
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Letters

01 August 1972
Comments Letters E y e colour of immature American Marsh H a w k Following the publication of my paper on a young American Marsh Hawk Circus cyaneus hudsonius near Cley, Norfolk, in the winter of 1957/58 {Brit. Birds, 64: 537-542), R. A. Richardson wrote to point out that...
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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 ...
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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...
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