Driving down the back roads from Petaluma to San Anselmo this past week, I stopped to watch a flock of starlings. They were flying up into the air and diving for insects or massing together on the open fields and on telephone lines. There were hundreds of birds, all chirping loudly and enjoying the day. It seemed idyllic until one looked more closely at the ramshackle farm house and the "No Outlet" sign. It might be fun for the birds but I doubt if it's easy being a farmer.