Owls in Colorado
Our list for Colorado has 9 owls recorded regularly there: 3 residents, 3 summer visitors and 3 winter visitors
Most likely in October
GBIF · OctShare of all bird records in Colorado in October, 2019–2024. Each month links to that month’s page.
All 9, most common first
Great Horned OwlBubo virginianusResidentUncommon46–63 cmRecorded all year
Burrowing OwlAthene cuniculariaSummer visitorUncommon19–25 cmRegularly Mar–Oct
Eastern Screech-owlMegascops asioWinter visitorUncommon16–25 cmRecorded all year
Northern Pygmy-owlGlaucidium gnomaResidentRare15–17 cmRecorded all year
Western Screech-owlMegascops kennicottiiWinter visitorRare19–25 cmRecorded all year
Northern Saw-whet OwlAegolius acadicusResidentRare17–21 cmRecorded all year
Short-eared OwlAsio flammeusWinter visitorRare34–43 cmRegularly Oct–Jun
Flammulated OwlPsiloscops flammeolusSummer visitorRare15–17 cmRegularly May–Sep
Boreal OwlAegolius funereusSummer visitorRare21–28 cmRegularly Jan–Oct
Smallest to largest
Length, cmData: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made