What kind of cocoon is this?

Question

My family and I saw some weird cocoons on our house this evening, was wondering what insect they contain. Here are some pictures, take a look and let me know what you think! Thanks!

http://img.photobucket.com/albums/v255/GameAngel64/cocoon1.jpg

http://img.photobucket.com/albums/v255/GameAngel64/cocoon2.jpg

http://img.photobucket.com/albums/v255/GameAngel64/cocoon3.jpg

Answer 1

It's an Evergreen Bagworm, Thyridopteryx ephemeraeformis, commonly known as bagworm, eastern or common bagworm. It will spin a cocoon its' entire life as a caterpillar, decorating it with pieces of plant material from the trees and/ or shrubs that it's feeding on. (This one appears to have some Juniper in its' cocoon.)

The adult males have a thin black body and clear wings. The adult females retain the caterpillar appearance.

For more on the moths' interesting and somewhat complex lifecycle please see the links below.