Coveside Bluebird Box, Open-Top - Similar to our standard bluebird house, this model has a circular opening in the top. Naturally, bluebirds will nest in rotten fence posts and stumps, so sun and rain do not deter them. On the other hand, sparrows are not as tolerant. A durable, hardware cloth, barrier prevents predators from entering through the roof. RANGE: Breeds east of the Rockies from southeastern Canada to Gulf of Mexico. Winters in southern part of breeding range and Mexico. HABITAT: Enjoys open woodlands, fields and farmlands with scattered trees. Dimensions: 12-1/2"h x 6"w x 8-1/2"d ~Brand: Coveside ~Availability: Usually ships Within 3 Business Days