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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Review

01 February 1941
Comments Reviews Ritchie (1940), " An analysis of t h e influence of weather upon a migratory movement of birds," Proc, Roy, Soc, Edin., Vol. 60, P- 299.analysis of t h e d a t a relating t o t h e 1921 invasion of t h e Waxwing (Bombycitta garrulus) and t h e associated...
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Review

01 February 1941
Comments Reviews Courtship and Display among Birds. By C, R. Stonor. (Country Life, Ltd.) With 57 plates from photographs, 8s. 6d. net. No aspect of bird behaviour is more fascinating, more biologically important or offers a more promising field for study than that of dis...
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Notes

01 February 1941
Comments Notes THESE notes cover the periods between May and September, 1939, and May to July, 1940, and are in continuation of those published in Vol. XXXII, pp. 366-8. BRITISH GOLDFINCH (Carduelisc. britannica).--It is pleasing to be able to record the continued incr...
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