Bison in Colorado in October
Yes, October is one of the best months to see bison in Colorado. It is the 1st busiest month of the year, with 107 of the 337 sightings logged across the year (31.8%), based on verified iNaturalist records.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
American Bison · William Harmon CC BY
American Bison · Coryn Fox Corvus CC BY
American Bison · Jason Layman CC BY-SA
Peak month for bison in Colorado
31.8%
of yearly sightings
107
records in October
#1
busiest month of 12
337
verified records a year
September 6.2%, October 31.8%, November 4.2%. Busiest month is October at 31.8%.
337 verified observations of bison in Colorado, recorded across 12 months of the year on iNaturalist.
When bison are recorded in Colorado
Peak month
October
107 records (31.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 5 | 1.5% |
| February | 15 | 4.5% |
| March | 18 | 5.3% |
| Aprilpeak | 36 | 10.7% |
| May | 22 | 6.5% |
| June | 33 | 9.8% |
| Julypeak | 37 | 11% |
| August | 16 | 4.7% |
| September | 21 | 6.2% |
| Octoberpeak | 107 | 31.8% |
| November | 14 | 4.2% |
| December | 13 | 3.9% |
Bison you are most likely to see
| Species | Verified observations |
|---|---|
| American Bison | 337 |
In Colorado, October carries 31.8% of the year's bison sightings, about 23.5 points above an even month-to-month split. That makes it the 1st busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from September (6.2%) into October, and it heads toward November (4.2%) after. This is right inside the peak window, so October is one of the surest months to plan a trip around.
The bison most often recorded in Colorado are American Bison. Those counts are annual totals rather than a October split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in October itself.
Which bison you are most likely to see
- American Bison337 records
Gear to see them
Frequently asked questions
Can you see bison in Colorado in October?+
Yes. October accounts for 107 of the 337 verified bison sightings logged in Colorado across the year, which is 31.8% of the annual total.
Is October a good time to see bison in Colorado?+
October is one of the best months. It ranks 1st of the year and sits inside the peak window of October, July and April.
What month is best for bison in Colorado?+
October is the single busiest month, with the broader peak running through October, July and April, based on 337 verified observations.
Which bison are you most likely to see in Colorado?+
The most-recorded species in Colorado are American Bison, based on all-time iNaturalist counts.
See bison in Colorado in other months
More places to see bison
More wildlife in Colorado