When to move an overwintered Nuc into a Hive

[tombo]

Overwintered a colony in a Nuc I received last year. It's still in the Nuc now. Is there a good time to transfer it over in the coming months?

 

[jenkinsbrynmair]

Overwintered a colony in a Nuc I received last year. It's still in the Nuc now. Is there a good time to transfer it over in the coming months?

when the spring is well underway and (if it's a 6 frame nuc) you have four/five frames packed with brood