Fifty years ago

01 July 1980 Comments Other 'NIGHT SOARING OF SWIFTS. Still there remains the question--do the birds come down and roost in the open? The only way to prove conclusively that they do not is to go up in an aeroplane and find them soaring in their aerial "park"--to cruise round the ...
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Notes

01 July 1973 Comments Notes Buzzard and Golden Eagle feeding on other avian predators On 2nd July 1972, near Appin, Argyll, we found an unusual food item at a nest of Buzzards Buteo buteo. Beside the nearly fledged young Buzzard were the fresh remains of a young Tawny Owl...
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A study of Swift weights

01 September 1971 Comments Main paper N E A R L Y A L L OF 2,546 Swifts Apus apus caught at Rye Meads Sewage Purification Works, Hertfordshire, in the late spring and summer of 1962 (845) and 1963 (1,701) were weighed and examined before being ringed and released. The pattern of the weights w...
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Swifts in sea-breeze fronts

01 June 1967 Comments Main paper G L I D E R P I L O T S often find themselves sharing rising currents of air with birds, sometimes to considerable heights. A source of upcurrents which has been found and used more extensively in recent years is the rising air at the sea-breeze front. Tw...
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