The note on snail-smashing by a previously inexperienced Song Thrush Turdus philomelos (Herring 1984) prompted me to summarise some observations made on hand-reared birds, mostly during 1961, as part of my doctorate project (Henty 1965), but not otherwise published previously. Experimental methods. The idea was to present some individuals of a brood with hard objects, including snails (adults of t


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