Global heating can have detrimental effects on the future survival of cuckoos during their long journeys. Rising temperatures and changing weather patterns due to climate change can alter the availability of food sources along migration routes, affecting the timing and success of migrations. Shifts in vegetation growth cycles may lead to mismatches between peak caterpillar abundance and cuckoo arrival times, impacting their ability to refuel during stopovers. Extreme weather events such as storms or heatwaves can also pose direct threats to migrating birds by disrupting flight paths or causing exhaustion.