Notes

01 September 1939
Comments Notes PROOF of the sex of the bird choosing the nesting-site is generally so difficult to obtain that it seems worth while to record some evidence in the case of a House-Sparrow (Passer d. domesticus) in my garden in the spring of 1939. Early in March I notice...
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Letters

01 March 1933
Comments Letters S I R S , -- I am making an investigation into t h e extent t o which butterflies in t h e perfect or imaginal state are preyed upon in t h e British Isles by birds, and should be grateful for any first-hand observations, giving, where possible, t h e spe...
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