When to let ducks in large pen?

[jroyalimage]

Ok so I have a couple khakis that are about 3.5 weeks old. They have been living outside for the past week in their small cage. I have not used a heat lamp on them and they are doing really well. They are not completely feathered but they are starting to come in. And they are still pretty small. When would be the best age/time to put them in the big pen? The pen is only a 10x10 so it's not huge.

 

[HennyPenny2]

Ok so I have a couple khakis that are about 3.5 weeks old. They have been living outside for the past week in their small cage. I have not used a heat lamp on them and they are doing really well. They are not completely feathered but they are starting to come in. And they are still pretty small. When would be the best age/time to put them in the big pen? The pen is only a 10x10 so it's not huge.

I don't know your temps and that may be an issue for you I don't know, but I had mine out of their brooder at that time and made a 5x5 ft pen out of PVC pipe and heavy duty plastic poultry netting held on by zip ties with bird netting (it's what I had) over top. They are in this all day with their pool (I was using a small kiddie pool but went back to using their 15 gal. oval rubber stock tank) and I provide shade for them. They go back to their temporary doghouse/kennel combo at night although mine are getting moved into their duck house this weekend. Here is a picture of the pen if that helps.