Male House Sparrows also do much of the feeding of the babies. I have about 40 baby House Sparrows and notice there are about 5 or 6 daddy House Sparrows doing most of the feeding, at least once the babies leave the nest. While they are in the nest the Mamas do the feeding. You hear the Mama House Sparrows CONSTANTLY urging the babies to leave the nest. No empty-nest syndrome as far as the Mama house Sparrows are concerned.