Did You Know?
- Nesting boxes should be placed in pairs to encourage both bluebirds and tree swallows to coexist. Otherwise, place boxes 100 yards apart.
- The nesting box hole for Eastern Bluebirds is 1.5 inches in diameter.
- Remove the nest from the birdhouse after the nestlings fledge to promote subsequent nesting, as bluebirds may nest 3 times in a season.
- Bluebird eggs are generally clear blue, in clutches of 4-6 eggs. Incubation time is approximately 14 days from when the last egg was laid.
- Bluebirds migrate southward and generally return mid-March.
- Some birds will remain in the North during winter, as long as they can find food, water, and shelter.
- Winter food can consist of berries from holly, bayberry, and mulberry bushes and suet/cornmeal formula-based mixes you can purchase or make yourself from recipes found online at nysbs.org.