Yes. That's exactly what I thought when I first saw these ads.At first I thought this was stupid, then decided it was totally brilliant!!
http://akroncanton.craigslist.org/grd/5881943977.html
This is a big business in the city of Chicago & suburbs. The rental/lease prices are about the cost of a simple prefab coop, supplies, & chicks. Either the customer will fall in love with their hens & the seller gets more $ when they purchase their beloved pets OR the customer will end the lease & the seller gets back a free coop & chicken dinner. "Chicken consultants" also charge big $ for educational classes on caring for backyard chickens.