Many animals undergo seasonal color changes as an adaptive strategy for survival. These changes serve two main purposes:
- Camouflage – matching surrounding environment
- Temperature regulation – darker colors absorb more heat
Notable examples include the Arctic fox and snowshoe hare, which turn white in winter for snow camouflage and brown in summer to blend with vegetation. Some birds acquire brighter plumage during breeding season to attract mates. These color changes are typically triggered by hormonal changes responding to seasonal variations in daylight length, a process called photoperiodism. The timing of these changes is crucial for survival and reproduction.