Trying to house an entire bird family with little real estate can be rather taxing. That is why we developed this multi-level, multi-unit bird dwelling. The main bird house is 20" tall, 5 1/2" wide and 5 1/2" deep. It has three 1 1/4" holes, each with "square cut" barnwood perches. It is a multi-level mansion. In addition, we have added two completely separate mother-in-law apartments--one on either side of the main dwelling. The apartments are 14" tall, 3.5" wide and 2 1/4" deep and feature 1" holes and "square cut" perches. A perfect home for a crowded neighborhood.