Letter

01 December 1986
Comments Letters Comments on group characteristics. The rare group study in the September issue (Brit. Birds 79:451, plate 249) gives a photographic record of a species which is still largely unfamiliar to many of us. In March 1986, the individuals of the group were cl...
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Letters

01 February 1935
Comments Letters SIRS,--May I say something on this vexed subject ? I speak of those territorial species whose young depend upon insects for food. Three sets of facts seem connected :-- (i) T h a t in a cold and wet breeding season we find infertile eggs, chicks dead in t...
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