Kathy -- when I went back out, I decided that BOTH nests look like they are primarily twigs, though there certainly are some more grass-like pieces as well as a few small seedheads (maybe dried sedum?) in the second one (it's also not as deep). I pulled out the one that was clearly all twigs (had a very deep "cup" in the middle but no eggs), but I left the other because I just wasn't sure. Here are the two pictures: first is the all-twig one that I removed today (how well do I need to clean out the box? I think there are a few twigs on the floor since I didn't have a brush with me). The second is the other box. Just a note: these two boxes are fairly close together because last year we had tree swallows and I had read that tree swallows and bluebirds will "share" space if there are two boxes. Swallows won't let another swallow pair nest nearby but will leave the bluebirds if they want the other house. I think what I read (on Audubon site or somewhere) was to put the two boxes about 10-15 feet apart. I know that's not what you do if you want actual bluebirds to use them both, but we were hoping to keep a pair of bluebirds in the one if the swallows returned this year (those swallows are GORGEOUS birds, too!)

Michelle, Yes it was bought at Sam's Club it's Wisecom Mini Color Camera w/Night Vision and Audio. My dh bought it for a bday present last July and since nesting season was over for the bbs here I had to wait until now. But as I stated in my OP they nested somewheres else for their first nest so I still had to wait. I don't like waiting lol. Anyways, The female has continued building this morning so I know she means business. I can't wait to set the cam up.

I was just looking at the sialis site and it says that this happens in up to 4-5% of bluebird nests. It does not indicate that there is anything wrong with the eggs according to sialis. Ken

Boy can I relate to your frustration. Those wrens ruin so many nests. Sorry about your Blues being chased out. Those wrens are just awful.