I have just purchased a rat trap as rats attack hens by nbbing at their feet, at their neck and their urine leaves diseases. Trap should arrive by the end of the year
Wow.
I had no idea rats could be that aggressive!
Chickens are much bigger than rats. So its startling that they would go after something bigger!
I hope it works out for you.
But how you keep the chickens out of the rat trap? They like the same kinds of baits.