I'm not sure where to put this. My son is showing chickens in our upcoming county fair. The record book he's keeping asks for value of the birds. Since we did not buy them at the start of the project we need to figure out their value at Sept. 1 and then now. He is showing 2 RIR hens and one rooster. The RIR's were bought at a few weeks old and are now 1 1/2 yrs. old and the roo was given to us at about 4 or 5 months old and is now just over a year. How would I find monetary values on them?