Just a heads up ... and I am assuming this is about the Askew's auction (Clay County Goat and Poultry), let me first say that
this is my favorite auction; however, you want to make sure that you bring something for the birds to go home in. They have a "cage must go" policy but I believe they will allow you to bring a box instead. The point is, you have to provide a way for the new owner to transport the birds home but you won't have a lot of interest if the birds cannot be easily seen by potential buyers. You have to take this into account when deciding how to pen the birds for the sale. If you bring the birds in a cage but bring an empty box for them to go to their new homes in, you accomplish both goals. If you actually let the cage go, you have to consider the value of the cage and need more for your birds. Some people bring the birds in boxes but attach a chicken wire front so that they can be seen in the box but they don't have a lot of money invested in it. Lots of ways to work this policy out, but it helps to be aware of it before you get there with birds in a $40.00 cage and nothing else for them to go to their new home in.
Also, some other auctions will "choice" birds out. (If you have 5 roosters in a cage, they will sell them one at a time.) Clay County generally does not do this. So if you want to sell them separately, make sure they come in separate enclosures.
Having said all of this, it has probably been 4-6 months since I have been to the Clay County/ Goodwater sale, so someone who has been there more recently feel free to correct me if you see something has changed. You could also contact them through their facebook page at
https://www.facebook.com/pages/Clay-County-Goat-And-Poultry-Auction-LLC/108877855887647 to make sure about whether they are allowing boxes. I got $7.00 a piece for my baby muscovy this year. (They were probably 1 week old at the time.) Although all auctions have off days, you can get fair prices there most of the time, and sometimes you can even get more than you expect. It is very clean and the people are generally very friendly. We have been going there since 2006. I highly recommend it!