I was discussing this same subject with one of the ag teachers in our district. I've always been of the opinion, "the only good snake is a dead snake". He did point out that chicken or rat snakes will eat mice and rats, as well as other snakes ( I like that part the best). So I have to rethink my opinion of snakes or at least chicken snakes.
We did have problems this summer with a chicken snake.... a 6 ft. one to be precise. We noticed that our egg production dropped way down. My husband found the shed snakeskin and was on a mission. He used ceramic eggs (golf balls are cheaper and don't break) in several nest and drained a couple of chicken eggs of the yolks and whites. He then placed a fishhook with about 5-6 ft. of fishing line attached into the small hole (only the hook inbside the egg, not the line) at the end of the egg where he had blown out the yoke and white. These eggs were placed in random nest boxes.
Well, guess who discovered the snake....yeah, yours truly and it was not one of my better moments. Thank goodness my 6'4", 300 lb, football playin' son was in the barn when the snake was discovered....I made him kill it! while I stood on the other side of the barn.
The snake had a ceramic egg and the fishhook from a consumed and crushed "egg" in him as well...the line was hanging out and he couldn't get away.
Remember whenI mentioned my sons height? Well, that's how I know how long the darn snake was...again from a distance, and yes the snake was dead...I had him hold it up...came to a little above his shoulders, with a few inches hung over the shovel handle and it's tail touched the ground.
Needless to say...egg production picked right up!