Social aspects of the termination of incubation behaviour in the ring dove (Streptopelia risoria)
The role of male and female ring doves (Streptopelia risoria) in the termination of incubation behaviour was studied first by observing heterosexual pairs (male and female) and homosexual pairs (female and female) (experiment 1). Male/female pairs incubate for 22 days whether squab or unhatched eggs are in the nest; female/female pairs incubate for 25 days or more. Males take the lead in terminating incubation. Another group of doves, separated from their (heterosexual) partners late in incubation, were exposed to one of four stimulus conditions: (a) an incubating dove; (b) a reproductively-inactive dove; (c) a reproductively-active dove; (d) visual isolation. Females extended the duration of their incubation when exposed to the sight of another dove, except when the stimulus dove was reproductively active. Males did not extend their incubation in response to these social cues. These social stimuli terminating incubation behaviour coordinate the withdrawal from the nest of male and female in preparation for the next breeding episode in this monogamous species. © 1982.
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