I have many bird houses of different sizes and types. In Winter I empty and clean them with bleach. Some house Flying Sqirrels and normal squirrels. (I leave their house keeping to them).
This year I plan to 're-do', and to do a better job. Some houses have been out 15 years and were not done as good as I can do now. I know more now. I made most of them.
The deal is to provide a safe comfortable place. "Safe" is a hard deal back here in the woods.
Many critters raid bird houses in my yard.
- raccoons
- possums
- sqirrels
- snakes
- other birds
- insects
- chipmunks
- flying squirrels
At my place the hardest to deal with are raccoons and snakes. 'Coons are fun critters, but I now hate all snakes. No snake is welcome in my yard. The other critters are more of a hit or miss thing.
Keeping all birds safe is too much, but I can do better.
One safe and productive place has been on my dock where Blue Birds took over the four houses I put up for Martins. They only use one at a time, but every year raise three broods. More than a hundred of the guys have safely fledged from there. I now look at these guys more a part of my large 'water bird' flock.
I am leaving their main house just in case (which is a very simple $10 job) and adding a much better one. To that end I scoured the web for the best so I could copy it and make a few. I narrowed it to two and ordered them. I found a 'WINNER'. I am not going to even make more, just order more. I highly recommend this one:
ebay
Amazon
It has a large rain over hang, metal hole guard, plastic viewing window, raised nest level to keep it dry (less insect problem), and very good ventilation. It is made solid, will last decades with an occasional coat of stain.
On a post you need a large pole guard. Even then, 'coons are a problem.
'Nailed to a tree' is easy picking, and that is where most of mine are.
My home has a two foot over hang (live in a round house) and will hang some round ones there out of sight of each other as I have had good luck with one of those. A hanging bird house is safer than any pole or post mount. I will try that from some tree limbs also.
I find that hole entry size is not relevant to my birds. It would be safer if the small birds would choose those with a tiny hole, but nope. A Nuthatch will nest in an owl house. My Wrens will nest - well anywhere. Bird experts have it figured out, but birds don't agree. I had Golden-crested Flycathers every year in an Owl house. I closed up the hole some to protect them this year, and they did not nest there. I replaced my main Screech-Owl house with an incredible upgrade, and they avoided it so far. They prefer the couple old ones I made from left over wood from when I built my Bride an outhouse.
Before Spring I will have a new bird-motel system in place. My birds deserve the best as I need a lot of birds to entertain me here on the porch.
Birds, Beer, and Music make me happy.