In house sparrows (Passer domesticus) it is generally found that both males and females care for the eggs and young. However, some male house sparrows do not provide parental care. In addition, it is known that young that receive parental care from both the male and female are more likely to survive to fledging (leaving the nest). Which of the following activities by males that do not provide parental care would represent the most beneficial trade-off for the reduced survival of their offspring?
A) attacking the nests of neighboring males
B) mating with additional females and fathering more eggs
C) eating to build up energy stores for migration
D) grooming to eliminate parasites from their feathers

Question

Quizplus · Accepted Answer

If males do not provide parental care, mating with additional females and fathering more eggs could increase their genetic representation in future generations, even if the survival of their current offspring is reduced. Attacking nests and grooming are unlikely to have a significant impact on their reproductive success, while building up energy stores for migration is only beneficial if the male is actually preparing to migrate.

In House Sparrows (Passer Domesticus) It Is Generally Found That