Brown-headed Nuthatches – fully feathered Posted on May 4, 2013 by GailMay 4, 2013 I have Brown-headed Nuthatches nesting in my back yard. They are nesting in my Bluebird box. I added hinges to the top of the box for easy viewing. There were four eggs and only 2 survived. They are now 2 weeks old and are fully feathered.