"새는 겨울에 남쪽으로 가요."

Translation: Birds go south in winter.

[bluefairy5]

Birds go south in the winter.

[honeyrbw]

"Birds go South in winters" is not correct?

[bluefairy5]

You have made winter plural.

[army23600]

I think birds go North in winter for migration. Im i right?

[MartaZamar]

In the Northern hemisphere (where South Korea is, too) birds usually migrate south because it's closer to the equator and warmer because of that. At least as far as I, a European, know. :)

[nurulujung]

Birds in the winter go south should be accepted