I am going to a large sale/SWAP Saturday morning. I just talked to the guy and he said there is usually 50-80 vehicles selling all different birds, poultry, water fowl..e.t.c. CAN'T WAIT. I am looking to add some hens to my collection. Looking for Welsummer, Speckled, Light or Buff Brahmas and Barnevelders. If it is like horse auctions there are always things to watch out for. What should I beware of here? It is my first sale! Help!