I make my birdhouses out recycled fence boards mostly. The dimensions for most small songbirds that will use a nestbox, are 4 inches by 4 inches inside with about 4 or 5 inches from the hole to the floor. I use a 1.1/8 inch hole size. This will allow entrance for the songbird while frustrating the larger predatory birds.

Chickadee nestbox

I havn't been posting much on my birdhouse site. sorry about that. I'm just really trying to spend time painting right now. But I do have alot of birdhouses in stock as the Port Gamble Trading company store in Pt Gamble closed down. So Email me at robinweiss@earthlink.net if you are interested in any nestboxes or feeders. Thanks

First picture

This makes alot more sense. a blog just for my birdhouses. Heres a whole collection , plus a feeder of my own design, made to sit on a 4x4 post. I'm not sure if I like this template so it may change in the future , but I'm excited to start a new birdhouse blog! Let me know what you think.