
Building your own nest box can be a fun family project. Almost any type of lumbar can be used, as long as it is untreated. A good choice is cedar or fur, both of which weather well.
Visit the bluebird section for video instructions on building a bluebird box. The same basic steps can be used to build larger boxes.
Each species shows has a favored box and hole size. Do not be too concerned, however, if your next box is not perfect. The birds do not use rulers and natural cavities are not perfect sizes.
Species | Base Size | House Size | Entry Size | Placement | Rural | Suburbs | Urban |
House Finch | 6″ x 6″ | 6″ | 2″ hole, 4″ above floor | Post 8-12 ft. | Fair | Fair | Fair |
Tree Swallow | 5″ x 5″ | 6″ | 1 1/2″ hole 4″ above floor | Post 5-8 ft. | Excellent | Good | Fair |
Violet Green Swallow | 5″ x 5″ | 6″ | 1 1/2″ hole 4″ above floor | Post 5-8 ft. | Excellent | Good | Fair |
Chickadee | 4″ x 4″ | 8″ | 1 1/8″ hole 6″ above floor | Post 6-10 ft. | Excellent | Good | Good |
Wrens | 4″ x 4″ | 8″ | 1″ hole 5″ above floor | Post or hanging 5-10 ft. | Excellent | Excellent | Good |
Bluebird | 5″ x 5″ | 8″ | 1 1/2″ centered 6″ above floor | Post 5-10 ft. | Excellent | Fair | Poor |
Tufted Titmouse | 4″ x 4″ | 8″ | 1 1/4″ centered | Post 4-10 ft. | Excellent | Good | Fair |
Flickers | 7″ x 7″ | 18″ | 2 1/2″ hole 14″ above floor | Post 8-20 ft. | Good | Good | Fair |
Species | Base Size | House Size | Entry Size | Placement | Rural | Suburbs | Urban |
Nuthatches | 4″ x 4″ | 10″ | 1 14″ hole centered 7″ above floor | 10-20 ft high on tree limb | Fair | Fair | Poor |
Flycatchers | 6″ x 6″ | 8-12″ | 1 1/2″ hole 6-10″ above floor | Post | Good | Good | Fair |
Downy Woodpecker | 4″ x 4″ | 8-10″ | 1 1 /4″ hole 6-8″ above floor | Post | Good | Good | Fair |
Robin | 6″ x 6″ | 8″ with roof for rain | Three sides open | Hanging on a building | Fair | Fair | Fair |
Barn Swallow | 6″ x 6″ | 8″ with roof for rain | Three sides open | Hanging on a building | Excellent | Fair | Fair |
Phoebe | 6″ x 6″ | 8″ with roof for rain | Three sides open | Hanging on a building | Fair | Fair | Poor |
Importance of Nest Boxes
Nest boxes are important for several reasons, but the one that stands out the most is security. We all want to feel safe in our homes, and birds are no different. The size of the nest box determines how well it can protect the birds from predators. A larger nest box may not provide enough protection from predators, while a smaller one may not provide enough space for the birds to feel secure. The right entry size is important so that other birds could not enter.
In general, a nest box should be sized appropriately for the bird species you are trying to attract. Providing the right size and type of nest box can increase the chances of attracting birds to your yard and successfully breeding and raising young.