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Records 2019–2024 · GBIF

Birds in Colorado

Our list for Colorado has 211 bird species recorded regularly there: 43 residents, 60 summer visitors, 51 winter visitors and 57 passage migrants

The list comes from 19 million birdwatchers' records from 2019–2024, shared through the eBird Observation Dataset on GBIF. A bird is listed when it was recorded in at least 3 of the 6 years and has a Birdfact species guide, so more species occur here than are listed; the months show when it is recorded most years.

Species on our list
211
In October
153
Common
58
Busiest month
May

What's special about Colorado

vs United States

The birds recorded far more often here than across United States, as a share of all bird records. These are the ones Colorado is worth visiting for.

  1. Mountain BluebirdMountain Bluebird11×Summer visitor · 0.68% of records here, 0.06% across United States
  2. American Three-toed WoodpeckerAmerican Three-toed Woodpecker11×Summer visitor · 0.06% of records here, 0.01% across United States
  3. Williamson's SapsuckerWilliamson's Sapsucker7.2×Summer visitor · 0.08% of records here, 0.01% across United States
  4. Western MeadowlarkWestern Meadowlark6.9×Summer visitor · 2.0% of records here, 0.29% across United States
  5. Cackling GooseCackling Goose6.6×Winter visitor · 0.71% of records here, 0.11% across United States
  6. Red-naped SapsuckerRed-naped Sapsucker6.1×Summer visitor · 0.19% of records here, 0.03% across United States
  7. Golden EagleGolden Eagle5.9×Resident · 0.28% of records here, 0.05% across United States
  8. Western KingbirdWestern Kingbird5.6×Summer visitor · 1.0% of records here, 0.18% across United States

This month: October

GBIF · Oct

Most likely

  1. Northern FlickerNorthern Flicker3.91%
  2. House FinchHouse Finch3.57%
  3. American RobinAmerican Robin2.96%
  4. MallardMallard2.89%
  5. Blue JayBlue Jay2.77%
  6. White-crowned SparrowWhite-crowned Sparrow2.70%

Arriving now

  1. Hooded MerganserHooded MerganserWinter visitorSep 0.05% → Oct 0.32%
  2. Horned GrebeHorned GrebeWinter visitorSep 0.01% → Oct 0.16%
  3. American Tree SparrowAmerican Tree SparrowWinter visitorSep 0.00% → Oct 0.16%
  4. Cackling GooseCackling GooseWinter visitorSep 0.01% → Oct 0.15%
  5. Common LoonCommon LoonWinter visitorSep 0.01% → Oct 0.12%
  6. Bonaparte's GullBonaparte's GullPassage migrantSep 0.00% → Oct 0.08%

Share of all bird records in Colorado in October, 2019–2024. “Arriving now” are the birds whose share rises most from last month. Each month links to that month’s page.

Near you this week

The birds most likely around your town or postcode right now, from the same records, for a square about 9 km across.

The bird calendar for Colorado

Month by month

When each bird is around, through the year. The darker the square, the closer that month is to the bird’s busiest. Filter by summer or winter visitors to see the seasons turn over.

The year in Colorado

Records by month
Bird records in Colorado by month, 2019–2024
January1,111,977
February868,409
March1,218,982
April2,318,320
May3,527,047
June1,847,321
July1,642,617
August1,419,965
September1,477,585
October1,121,525
November991,251
December975,992

May has the most records (3.5 million). Records follow birdwatchers as well as birds: a busy month means more people out looking, as well as more birds passing through.

By family

12 of 28
All 28 families in Colorado

How common

More of United States

All of United States

All 211 birds, A to Z

Show all 211 birds

Questions

4

What birds is Colorado known for?

Compared with the rest of United States, Colorado stands out for Mountain Bluebird, American Three-toed Woodpecker, Williamson's Sapsucker and Western Meadowlark. Each is recorded at least 6.9 times as often here as across United States, as a share of all bird records (2019–2024).

How many birds are on Birdfact's list for Colorado?

211 species, each recorded regularly in Colorado (in at least 3 of the 6 years 2019–2024): 43 residents, 60 summer visitors, 51 winter visitors and 57 passage migrants. The list includes only birds with a Birdfact species guide, so more species occur in Colorado, and rarer vagrants are not listed.

What birds can I see in Colorado in October?

153 species on our list for Colorado are recorded regularly in October. Of these, the most often recorded are Northern Flicker, House Finch, American Robin, Mallard and Blue Jay.

What are the most common birds in Colorado?

Of the birds on our list, the ones birdwatchers record most often in Colorado are House Finch, American Robin, Northern Flicker, Canada Goose and Mallard.

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

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