Birds don't need to cooperate in groups to find food. In animals that do, you can bet that they have a way to wake together. If you're camping in the same tent

Birds don't need to cooperate in groups to find food. In animals that do, you can bet that they have a way to wake together. If you're camping in the same tent as other humans you'll soon find that out. Alarm clocks are a workaround for not living communally with the rest of your tribe.