11.17. 금. Migratory Birds (철새)

Migratory Birds (철새) When spring is in the air, swallows fly in from the south. Birds like whooper swans also migrate with the seasons, and these birds are called "migratory birds." Birds that don't stay in one place, just stopping by and passing through, are known as "nomadic birds." The reason migratory birds don't stay in one place is that they need food in order to build nests, lay eggs, and raise their young. If too many birds are in the same area, competition heats up to survive. So, the b...

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