The measurement of egg freshness is called Haugh Units (pronounced Hawk). It is the measurement of Albumin height (or egg white) of an cracked egg on a flat surface close to the yoke. As the egg ages the egg white becomes more runny and thick Albumin height goes down. Keeping eggs...
Although I am ordering a trigger from TriggerHappyChickens, I was stimulated to get an automatic feeder after visiting a guy who had made his own feeder based on the same principle. He had nothing more than an open padlock hooked inside a hole in the bottom of a clear plastic tub filled with...