Letters

01 December 1988
Comments Letters The identity of 'Mystery photograph 97'. In the light of 25 years' experience in studying Aythya hybrids, I do not consider that the bird in mystery photograph 97 {Brit Birds 77: plate 254; 78: plate 19; 81: plate 343) is a Tufted Duck A. fuligula X Po...
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Letters

01 December 1956
Comments Letters I N T E R P R E T A T I O N O F V A R I A T I O N AMONG T H E YELLOW WAGTAILS S I R S , -- May I ask a little of your space in which to comment on some points in Dr. Mayr's summing-up (antea, pp. 115-119) of our present state of knowledge of the Yellow Wa...
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Letters

01 April 1955
Comments Letters THE ABERDEENSHIRE RECORD OF A WHITE-THROATED SPARROW 5ms,--Commenting - on the four British-taken examples of the White-throated Sparrow (Zonotrichia albicollis) in their excellent and timely paper "American land-birds in western E u r o p e " (antea, pp....
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