Hello. I am new to gamecocks. I inherited over 25 Sweater Greys. My Dad received these over 20 years ago, straight of the farm of Percey Flowers. They have green legs. They are a pure breed. They are extremely aggressive towards any other roosters. My questions are.....What is the history of these, besides that I know Percy fought these. What's the worth? And I will continue to read up on how to better feed and show these beautiful birds.