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A snake can climb most anything. I found a dead snake in the attic of my house with 30' high sheer brick walls.
A game cam may be a good investment except that a snake being cold blooded won't be caught on the camera unless you set it to run constantly.
You may not have skunks now, we don't either. Don't be surprised if you have foxes though. There are lots of people in the city here that have seen fox. Same goes for coyotes. Chicago is called the coyote capitol of the world. Coyotes have taken 3 of my roosters over the last 3 years - in the middle of the day.
Who is laying, who is not article by
@aart.
https://www.backyardchickens.com/ar...-is-not-butt-check.73309/reviews#review-18608
Most any normal nest material should be sufficient unless your shells are very thin.
I use both excelsior nest pads and the AstroTurf type nest pads. I have also used pine shavings, straw and orchard grass.