The term 'hen houses' can be summarized by the crossword solution 'COOPS, ' which is a five-letter word. COOPS are small enclosures, typically made of wood or wire, that are used to house chickens and other poultry. They provide protection from predators and the elements, while also allowing the birds to move around freely. Hen houses are usually built in a backyard or on a farm, and they come in a variety of shapes and sizes.