Based on 3,275 research-grade iNaturalist observations in Colorado, Mountain Bluebird is most often recorded in June; in Colorado it behaves like a summer visitor / breeder. It ranks #19 among birds recorded in the state in our data.
Sialia currucoides
Mountain Bluebird in Colorado by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Colorado in June
American Robin
Black-billed Magpie
Red-winged Blackbird
Broad-tailed Hummingbird
Mallard
Spotted Towhee
Great Blue Heron
Red-tailed Hawk
Places to look in Colorado
National ForestWhite River National Forest
Botanical GardenDenver Botanic Gardens
National ForestRio Grande National Forest
National ForestSan Juan National Forest
State ParkRoxborough State Park
State ParkMancos State Park
FAQ
When does Mountain Bluebird appear in Colorado?
Mainly March–October, with the most records in June.
How common is Mountain Bluebird in Colorado?
It ranks #19 by number of iNaturalist observations among birds in Colorado (3,275 records in our sample).