It looks like it came from some form of pest, but there are no obvious holes or material above it. It's between glass and a screen with no obvious openings or holes. None of my other windows have it. We did have the house re-insulated recently, but I don't think it looked like this. Any help identifying what's going on?
I'm geographically located in Northern NJ I'm the US in the suburbs.
Could also be carpenter ants, no?
My guess is it could be The Carpenters. Look for any signs of a Californian soft rock band.
Possibly carpenter pants, look for big side pockets and denim loops.
Well, bless your Carhartt
I'm a Dickies Man, tyvm.