my sons new mandarins sleeping questions

[jones101]

we live in ohio I have built them a really cool pen it has four nest boxes but they all four sleep out in the open. is this normal behavior? I just am curious since we are heading into cold temps. I know they love to perch so maybe this is the preferred sleep method.
thank you for any info.

 

[JJRS]

Normal.

 

[jones101]

ok thank you that makes me feel better.