I pulled this Wren's nest out of the Bluebird box, just to get a better look at it. It's always made with small twigs, and prickly little sticks. I like the fact that she found a white feather to put in the nesting area. Putting this kind of nest back into the box isn't that hard. I'm quite sure she doesn't have a design for the placement of all those twigs. I just shoved it back in the box and tucked in the twigs that were poking out.
Consider that my good deed for the day.
I don't particularly like Wrens. They have a nice little song and are protected by law but they can be vicious little things. I found a nest once where they had taken over the Bluebird nest by killing the female and building their twig style nest right on top of her and her eggs. Disgusting.