by Kanesh! Living with another male in the nest and sowing an adopted egg is the same hierarchical trick as raping another male to demonstrate alphabetism)))
And in general, the fact is that birds are not mammals, so the parental instinct in them is not called asymmetrically to the female (when breastfeeding, the daddy with all the desire will not be able to be the child as close as the mommy, but in many birds and fish males equally, or even more actively female children are engaged)