Step-by-step explanation:
Robins are born in the spring or summer and are mature birds and ready to breed in the following spring or summer. They do not mate for life. Pairs usually remain together during an entire breeding season, which can involve two or three nestings.
Since leaving the nest (fledging), it takes another 10-15 days for babies to become good fliers and individual birds. The parents continue to feed their young throughout this time.