I'm not a fan of bird feeders, as I have an ongoing battle with birds and my roof line... downtown Churchill birds seem to prefer big houses with built in eggnishners and ducted heating... however, its a cool design.
Hate to be the family in the bottom, with 2 squawking families above,,, especially in Spring. Are the perspex doors for the delinquent payers, or simply home inspection before they decide on the rent?