of the Falconidae ringed in the British Isles under t h e scheme now managed by the Bird-Ringing Committee of the British T r u s t for Ornithology and earlier by the late H , F , Witherby, then Editor of British Birds. There were no recoveries for any of these species under the former Aberdeen University scheme. Another paper (Thomson, 1958) has already dealt with the hawks (Accipitridae). The nu...

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