Hello, I have a 4 week old chick that I think is a rooster. They seem to be feathering later and his/her feet are larger than the others. I heard about this thing called the gold ring test. I tried it with any old ring (that was not gold) and it went back and forth. I tried it on another aggressive chick that was showing no signs of rooster besides aggressiveness and it said they were a girl. how reliable is the gold ring test? will it work with any plain ring? pics of chick that ring test said was rooster.