Good to know!! Do you know if it's just the hay, or is it anything including pine and stuff?Scorpions will also hide out in nesting boxes if you use hay. My next door neighbor told me that chickens will eat the scorpions and be just fine, but if they get stung by one, it can paralyze them for maybe up to 3 or 4 days where they can't walk. If that happen's, you need to separate the chicken from the flock, and set water and food bowls right next to them, or they won't be able to get to it.
Btw Blue Kazoo is our official roo now. He's getting big, does a great job keeping his little flock together. They've been free ranging for a couple days but stick to the side yard where their coop is. No one has ventured into the big world beyond, but they peek a lot!