'ON THE BREEDING-HABITS OF THE MANX SHEARWATER, WITH SPECIAL REFERENCE TO ITS INCUBATION- AND FLEDGING-PERIODS. By R. M. Lockley. It was with the main object ofdiscovering the incubation- and fledging-periods that I marked a number of nests of the Manx Shearwater (Puffinus p. puffinus) on the island where I live. Skokholm lies off the far south-west Pembrokeshire . . . ' (Brit. Birds 23: 202, Januar
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