A modular apparatus for housing animals comprising a wall unit, a window unit, a roof unit, a skylight unit, a door unit, a bath unit, an observation unit, and a port unit, and a fastening system adapted to releasibly interlock said units to form a housing suitable for animals. The apparatus can be assembled at a first location and subsequently disassembled and reassembled at a second location. Among the animals are raptors and other avian species.
