When we had chickens, I caught a fellow like that trying to swallow an egg. Got the egg, and escorted the snake to another less occupied corner of the property. 2 days later, I caught him again. He went for a long ride that time.
I don't think I'll ever forget my grandmother reaching up into a nest box to get the eggs out and one of those sliding down her arm. My grandfather and I were on the other side of the house, and we IMMEDIATELY knew something was bad wrong. I don't think I ever saw my grandmother any more shook up.