Testing for imitative and nonimitative social learning in the budgerigar using a two-object/two-action test by Heyes, C, Saggerson, A

Sequence learning by action, observation and action observation by Bird, G, Osman, M, Saggerson, A, Heyes, C

Sequence learning by action, observation and action observation. by Bird, G, Osman, M, Saggerson, A, Heyes, C

Blind imitation in pigeons, Columba livia by McGregor, A, Saggerson, A, Pearce, J, Heyes, C