Letters

01 February 1971
Comments Letters Elusive species and the B.T.O. Ornithological Atlas project Some species are proving to be difficult to locate in fieldwork for the Ornithological Atlas. In order to prepare full maps for these species, we cannot rely solely on fieldwork carried out purel...
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Letters

01 November 1931
Comments Letters SIRS,---It so happened that, after reading the letter on this subject (antea.-p, 140), I had to consult The Gentleman's Magazine (Vol. XIX.), 1749. I t was curious therefore to come across the following (p. 204) : " The Egg of a Swan with another in it. G...
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