Bison in Colorado in April
Yes, April is one of the best months to see bison in Colorado. It is the 3rd busiest month of the year, with 36 of the 337 sightings logged across the year (10.7%), 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
10.7%
of yearly sightings
36
records in April
#3
busiest month of 12
337
verified records a year
March 5.3%, April 10.7%, May 6.5%. 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, April carries 10.7% of the year's bison sightings, about 2.4 points above an even month-to-month split. That makes it the 3rd busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from March (5.3%) into April, and it heads toward May (6.5%) after. This is right inside the peak window, so April 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 April split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in April 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 April?+
Yes. April accounts for 36 of the 337 verified bison sightings logged in Colorado across the year, which is 10.7% of the annual total.
Is April a good time to see bison in Colorado?+
April is one of the best months. It ranks 3rd 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