Common Birds in Colorado
Our list for Colorado has 58 common birds recorded regularly there: 22 residents, 22 summer visitors, 13 winter visitors and 1 passage migrant
Most likely in October
GBIF · Oct
Share of all bird records in Colorado in October, 2019–2024. Each month links to that month’s page.
All 58, most common first
House SparrowPasser domesticusResidentCommon14–17 cmRecorded all year
Downy WoodpeckerDryobates pubescensResidentCommon14–18 cmRecorded all year
White-breasted NuthatchSitta carolinensisResidentCommon13–14 cmRecorded all year
Yellow-rumped WarblerSetophaga coronataSummer visitorCommon12–15 cmRecorded all year
Bald EagleHaliaeetus leucocephalusWinter visitorCommon70–102 cmRecorded all year
Say's PhoebeSayornis sayaSummer visitorCommon17–20 cmRecorded all year
Rock DoveColumba liviaResidentCommon29–37 cmRecorded all year
Common MerganserMergus merganserWinter visitorCommon58–68 cmRecorded all year
Great Blue HeronArdea herodiasResidentCommon91–137 cmRecorded all year
Hooded MerganserLophodytes cucullatusWinter visitorCommon40–49 cmRegularly Oct–Apr
Northern ShovelerSpatula clypeataWinter visitorCommon44–51 cmRegularly Aug–Jun
Eurasian TealAnas creccaWinter visitorCommon34–38 cmRegularly Aug–Jun
Western KingbirdTyrannus verticalisSummer visitorCommon20–24 cmRegularly Apr–Sep
Chipping SparrowSpizella passerinaSummer visitorCommon12–15 cmRegularly Apr–Oct
Turkey VultureCathartes auraSummer visitorCommon62–81 cmRegularly Mar–Oct
Pied-billed GrebePodilymbus podicepsWinter visitorCommon31–38 cmRecorded all year
Pine SiskinSpinus pinusResidentCommon11–14 cmRecorded all year
American Tree SparrowSpizelloides arboreaWinter visitorCommon14–17 cmRegularly Oct–Mar
Vesper SparrowPooecetes gramineusSummer visitorCommon13–17 cmRegularly Apr–Oct
Cinnamon TealSpatula cyanopteraSummer visitorCommon36–43 cmRegularly Feb–Sep
Ruby-crowned KingletCorthylio calendulaSummer visitorCommon9–11 cmRecorded all year
OspreyPandion haliaetusSummer visitorCommon54–58 cmRegularly Mar–Oct
Lark SparrowChondestes grammacusSummer visitorCommon15–17 cmRegularly Apr–Sep
Data: 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