This is what we caught in a mouse trap today. It was a baby. So I'm worried about where the momma is.
Nope that's a mature weasel. That's as big as they'll get. Those will get your chickens too. They don't look it but they can get aggressive.
"Thanks for this info. We are having problems with Ermine. Where can you buy these traps? Thanks"
I get mine at FnT Post. A big selection of different brands. They have the cheapest traps that I have seen.