Bison in Oregon in May
Yes, May is one of the best months to see bison in Oregon. It is the 2nd busiest month of the year, with 78 of the 684 sightings logged across the year (11.4%), 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 July 2, 2026.
Peak month for bison in Oregon
11.4%
of yearly sightings
78
records in May
#2
busiest month of 12
684
verified records a year
April 9.5%, May 11.4%, June 10.1%. Busiest month is July at 14%.
684 verified observations of bison in Oregon, recorded across 12 months of the year on iNaturalist.
When bison are recorded in Oregon
Peak month
July
96 records (14% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 20 | 2.9% |
| February | 68 | 9.9% |
| March | 50 | 7.3% |
| April | 65 | 9.5% |
| Maypeak | 78 | 11.4% |
| June | 69 | 10.1% |
| Julypeak | 96 | 14% |
| August | 75 | 11% |
| Septemberpeak | 76 | 11.1% |
| October | 45 | 6.6% |
| November | 29 | 4.2% |
| December | 13 | 1.9% |
Bison you are most likely to see
| Species | Verified observations |
|---|---|
| Bighorn Sheep | 327 |
| Mountain Goat | 269 |
| Domestic Cattle | 55 |
| Domestic Sheep | 8 |
| Domestic Goat | 5 |
| Aoudad | 3 |
| American Bison | 1 |
In Oregon, May carries 11.4% of the year's bison sightings, about 3.1 points above an even month-to-month split. That makes it the 2nd busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from April (9.5%) into May, and it heads toward June (10.1%) after. This is right inside the peak window, so May is one of the surest months to plan a trip around.
The bison most often recorded in Oregon are Bighorn Sheep, Mountain Goat and Domestic Cattle. Those counts are annual totals rather than a May split, so treat them as which species you are likely to encounter, while the month figures above show how many sightings fall in May itself.
Which bison you are most likely to see
- Bighorn Sheep327 records
- Mountain Goat269 records
- Domestic Cattle55 records
- Domestic Sheep8 records
- Domestic Goat5 records
- Aoudad3 records
Plan your bison trip in Oregon
Start with live tours near Crater Lake National Park, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Crater Lake National Park
Use the live GetYourGuide widget to compare local departures and activity styles close to the main bison viewing area.
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Stay nearbyStay near Crater Lake National Park
Compare hotels, cabins and lodges close to the best bison viewing area in Oregon.
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Broader backupBook a bison tour in Oregon
Compare guided wildlife tours, boat trips and nature experiences if you want a second travel network beyond the live widget.
Gear to see them
Frequently asked questions
Can you see bison in Oregon in May?+
Yes. May accounts for 78 of the 684 verified bison sightings logged in Oregon across the year, which is 11.4% of the annual total.
Is May a good time to see bison in Oregon?+
May is one of the best months. It ranks 2nd of the year and sits inside the peak window of July, May and September.
What month is best for bison in Oregon?+
July is the single busiest month, with the broader peak running through July, May and September, based on 684 verified observations.
Which bison are you most likely to see in Oregon?+
The most-recorded species in Oregon are Bighorn Sheep, Mountain Goat and Domestic Cattle, based on all-time iNaturalist counts.
See bison in Oregon in other months
More places to see bison
More wildlife in Oregon