01 May 1933
Comments Notes As the Jackdaw (Colceusm. spermologus) is a bird not usually subject to variation, some notes on a local variety seen at Douglas may be of interest. These white-winged Jackdaws are best described as having on the outer primary a white spot or " mirror " e...
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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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