Explain how seasonal phenomena differ in the life of birds and reptiles.

Birds, as warm-blooded animals with a constant body temperature, at the onset of an unfavorable period, either prepare for wintering, or migrate, they are active all year round.
Reptiles need sunlight as they are cold-blooded. With the onset of seasonal phenomena, until the very spring, they hibernate in their own shelters. Birds are warm-blooded animals and, with seasonal phenomena, they can either migrate to another place, or they can overwinter.