My wife is insistent that we turn this piece of wood from a tree we had to remove, into a birdhouse.
I’m thinking I need to build a box behind the piece. Unsure of dimensions, and if I should fill in the hole a bit so only the smaller birds can get in.
Southern Ontario, Canada, as that may matter for native birds/sizes. More photos below.
Edit: spelling, grammar.


I run a birdweather station based on BirdNetGo, so I have a very good idea what’s around on a consistent basis. I guess I’ll start there and even try and aim for a species that matches the existing hole. Thanks for the guidance!
Carolina Wren it is. We get quite a few of them. What a great resource, thanks again for that.