A feather-wing worm? What is this in my backyard?

[amars]

I found this feather-wing thing in my backyard. It is a worm, inside, with wings like wooden feathers. It's very strange, and at the beginning, I thought it's a bunch of wooden pieces, however, it was moving and all those wooden feathers were attached to the worm body. Attached below are some pictures. Any ideas what is this? Or, where can I look for more information?
Thanks,

Attachments:

[Paul K]

It is a moth caterpillar from family Psychidae, commonly called bagworms.
They stay inside of this wooden cocoon to protect them selfs from predators.

Paul

[ren]

Neat!