(Plate 7). ON the moors of North Wales the common viper (Vipera berus) habitually preys on chicks of Red Grouse (Lagopus s. scoticus) and young Meadow-Pipits (Anthus pratensis) and Ring-Ouzels (Turdus t. torquatus). One hot day in early June, 1932, I was out photographing on the moors near Cerrigydruidion. Passing through a disused heather-grown quarry my attention was attracted by a loud hissing,...

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