Abstract
IN this monograph, which is being issued in twelve parts, Mr. Swann is bringing up-to-date the results of his recent intensive study of the diurnal birds of prey. In his introduction, which includes a chapter on falconry and hawking, it is stated that he now recognises 322 species and 692 subspecies or forms, while the genera employed number 100. In 1874 Sharpe (Catalogue of the Birds in the British Museum, vol. i) gave the number of species as 377, but many of these are now considered subspecies. It will therefore be seen that in the last fifty years the number of apparently distinguishable forms has nearly doubled.
A Monograph of the Birds of Prey (Order Accipitres).
By H. Kirke Swann. Part I. Pp. xi + 52 + 5 plates. (London: Wheldon and Wesley, Ltd., 1924.) 26s. net.
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A Monograph of the Birds of Prey (Order Accipitres) . Nature 116, 310 (1925). https://doi.org/10.1038/116310b0
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DOI: https://doi.org/10.1038/116310b0