Birds in my Flue, help?

[2knots]

Hardware cloth and make a screen cap for it

Great idea but I'm clueless, what is hardware cloth? I was thinking about something like the bug netting that I use for bugs at Willard, I've just not sure if it's big enough. Do you think hardware cloth would let the flue vent?

It’s comes in sheets and is a wire mesh (1/8- 3/16ths holes, micro chicken wire), most hardware stores have it

Thanks Alan, I'll look into that. Funny it's called cloth but it's made from wire mesh.

They usually have pieces cut that are 1’x2’ or 2x2’