I would let them source their required poultry on their own for several reasons:
#Handling and transporting poultry of unknown origin and health conditions could contaminate your own flock as you would carry the contaminants on your clothes and shoes, on yourself hands, skin, hair etc) and...
While all the above is correct, there are many ways to blur the true age of the bird.
1. Condition of feet and shanks will appear fresh and youthful after spraying them several times with Ballistol animal or similar.
2. Young chickens will go through several juvenile molts up to the age of...