Mountain Bluebird in August

August feels like summer but the year has turned. Southbound migration is quietly underway, many adults are molting into fresh plumage, and family groups are breaking up. Late nesters are still feeding young in the North while southern birds are already drifting toward wintering grounds.

For the Mountain Bluebird specifically, August is a summer month of relative routine, with the species settled into its seasonal pattern across its range. Across the 23 states and provinces where mountain bluebirds occur, what the bird is doing this month depends heavily on latitude — the details below break it down by band.

Southern states

absent

Mid-latitudes

year-round resident

Northern states & Canada

absent

In August, mountain bluebirds are absent in the South, year-round resident across the mid-latitudes, and absent in the northern states and Canada. That north–south split is the defining feature of this month: where you live changes which version of this bird you're looking at.

Mountain bluebirds are not nesting in August. The season runs May–July at mid-latitudes, and up to a month later in the North.

That makes August a useful month for nest-box work: cleaning out old nesting material, checking mounts and predator guards, and making repairs while boxes are empty. A box that's ready early gets claimed early.

Mountain Bluebird nest box dimensions and mounting →

• Grasshoppers, beetles and caterpillars

Nests at high elevations in open country; takes nest boxes on fence lines.

Molting birds look scruffy and often skulk — don't be surprised if familiar visitors briefly vanish. Keep water fresh in the heat.

Full Mountain Bluebird diet guide → · Best feeder for mountain bluebirds →

Mountain bluebirds are settled and predictable in August, which makes this a good month to learn the bird's routine — same feeders, same perches, same times of day.

If you have a Mountain Bluebird box up, this is the month to make sure it's clean, secure and ready — the box guide below has the exact hole size and mounting height this species needs.

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