How come my bird does that with his foot?

[Mokey]

Okay, so my eclectus parrot named Mokey (hence my profile name) does this weird thing with his foot at night, and I'm not sure if it's normal, or if it's something I should be concerned with. Here's an image: Edit: Sorry, the computer processed the image horizontally.

 

[texsize]

very normal.
means he is relaxed.
it also may be a way to keep his foot warm.

 

[clark_conure]

VERY EXTREMELY NORMAL, HEALTHY, GOOD, when you see that he's happy, healthy, content.