It is the belief of some biologists that worms are found NOT by hearing but by sight. Other types of insects and even small snakes make up part of their diet. But American Robins LOVE fruit with cherries, grapes, choke cherries, and tomatoes high on their favorite food list. Robins near the sea will also eat mollusks and tiny fish. In the spring, robins will usually migrate back to the same area year after year.
Males stake out their territories before the females arrive, singing love songs to the females.
From early fall until spring, the males do not sing. However, you can hear their other chatter and calls throughout the year. Females call but leave the singing to the males. Instead of singing, the females devote their attention to the building of their nests. Sometimes the males will attempt to help but follow the direction of the determined females.