[pigeonjim]

Diddo on the 1" square mesh strongest you can find. Keeps all critters out. Rats, mice, and even small birds like finches can carry disease in when they are after the food. Cold, like said, is not a problem as long as there are no drafts. Heat sources I do not like. They can cause sweating which is moisture and is not healthy for the birds. I have heard of some that use heat and have no trouble, I guess it is up to the humidity in the climate they live in. Low ceiling height makes it easy to catch up the birds and a lot of perches ^^^^to get off the floor. I keep my water in a shaded spot in the outside aviary to keep dust out and feed on a bench off the floor for cleanliness. Everyone has there own ways, listen to the folks here and they will keep ya straight. Good luck and look forward to some pictures to see how you do it.

 

[pigeonjim]

Me too, I thought 1" square was 1/2 inch by 1/2 inch. Either way smaller the better.

 

[pigeonjim]

Here Lowes and home depot and most hardware stores sell it. Expensive, but worth it in the long run.