The answer is false. ik prolly too late but i answered for the students that looking for the same answer lol
The answer is: fall asleep whenever they feel tired
Sleep is your body's natural response to put itself into rest and recharge after undergone a certain level of work.
If the babies are let go in an active environment, their sleeping pattern would automatically adjust itself and putting them into sleep whenever they feel tired after their activities.
Because it was warming in the south and that’s where the animals were heading