To teach canaries to sing, trainers spend laborious months playing flutes, violins, water organs, chimes. Last week Milton Metfessel reported to Science that eight canaries born & reared in soundproof cages in a University of Southern California psychology laboratory are now producing all the effects in a trained canary's repertoire: hollow roll, hollow bell, schockel, flutes, water roll, bass roll, glucke, glucke roll, water glucke, deep bubbling water tour, bell roll, bell tour, bell glucke.
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