Roosting wrens

This is a short video I made seven years ago, long before I started this blog.  In a very cold winter this gang of wrens (I think herd is the correct group name) was roosting in a nest box in the porch.  The colder it got, the more there were, with a peak of 16 in one box.  On this night there were probably 10 or so.  At the end of the video they are disturbed by me going out to work the next morning and they all bale out of the box like paratroopers.  I think I'll have to do more video recording and editing.