In my back yard and at the cabin out in the woods I built and hung quite
a few bird houses. I have one question. At the end of season do I need
to clean out the nests they built or leave them as is? I can access
inside of the house and when I checked all has nests and chicks moved out.
A clean and empty house will be much more inviting to the next batch
come spring. Just like humans, they prefer houses that don't take days
of cleanup before they can move in. I'm no bird expert, but IIRC, almost
no species will reuse somebody else's nest. There are a few that will
come back and add another layer to their own old nest, though, but I
don't think those kinds use houses.
I have done either one. Obviously, if you want to take the house in
for the winter, clean it out with soapy water with some bleach. Most
birds will clean out a used birdhouse before making their own nest. My
first birdhouse built over 25 years ago is still holding up well, and
the birds seem to prefer it over the newer models.
birds just build nest over old nest, till the house gets so jammed its
I am no expert but have near 25 bird houses on our property.
Also have some bird roost houses to put up, so birds have nice warm
Most newer models have formaldehyde in the walls.
Esp. the ones the federal government supplies.
If you apply for a C of O, you'll need EPA certificates. If you don't
have one, it will be very hard to collect rent.
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