chicken ark
n.— «Getting set up with chickens can be very cheap: the birds themselves cost from 25p to £20 each and the housing can be home-made, although a wooden chicken “ark” will cost around £200.» —“How to be a 21st-century smallholder” by Paul Waddington Guardian (United Kingdom) Feb. 25, 2006. (source: Double-Tongued Dictionary)