Abstract
Two experiments were carried out as follows: in the first males and females previously paired in the laboratory and isolated for periods up to 7 months were released into large outdoor cages in groups of three pairs each. In all cases the original pairs were re-established. In the second experiment females were offered a choice of former mates or strange males confined behind glass partitions in separate compartments. Twelve of fifteen females laid eggs near the former mate and performed more reproductive behaviour in his presence. These studies suggest that ring doves are capable of recognizing other individuals. Moreover, the pairing relationship is retained when physical contact is prevented, when individuals are isolated for extended periods, and when the original pairing relationship is experimenter-determined.
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