I recently took pictures of Spotted doves (Spilopelia chinensis) during their courtship. The one on the right, is large with a off-white breast and the one on the left is comparatively small with dingy reddish white breast.
My professor and I presumed that the one on the right is the male and the other is the female. The larger one mounted the other during cloacal kiss.
I've checked Wikipedia and other sites which seem to copy Wikipedia, they say that the species does not show sexual dimorphism. On the other hand, this website claims that there is a difference.
Does it show sexual dimorphism?
Location: West Bengal, India