Letters

01 March 1993 Comments Letters Song Thrushes and Redwings feeding on periwinkles. I was surprised to see the note on Song Thrush Turdus philomelos feeding on common periwinkles Littorina littorina in Kent (Brit. Birds 85: 618). Song Thrushes always fed on the old periwinkl...
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Letter

01 February 1941 Comments Letters S I R S , -- I t has long been known t h a t there is a remarkable relation between t h e Short-eared Owl (Asio flammeus) and the common field-vole (Microtus agrestis). The common vole at apparently regular intervals increases in numbers in different loca...
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