Bats in Colorado in May
Yes, May is a good month to see bats in Colorado. It is the 4th busiest month of the year, with 116 of the 861 sightings logged across the year (13.5%), 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.
Good month for bats in Colorado
13.5%
of yearly sightings
116
records in May
#4
busiest month of 12
861
verified records a year
April 5.2%, May 13.5%, June 15.6%. Busiest month is July at 22.8%.
861 verified observations of bats in Colorado, recorded across 12 months of the year on iNaturalist.
When bats are recorded in Colorado
Peak month
July
196 records (22.8% of the year)
| Month | Observations | Share |
|---|---|---|
| January | 5 | 0.6% |
| February | 7 | 0.8% |
| March | 21 | 2.4% |
| April | 45 | 5.2% |
| May | 116 | 13.5% |
| Junepeak | 134 | 15.6% |
| Julypeak | 196 | 22.8% |
| Augustpeak | 193 | 22.4% |
| September | 112 | 13% |
| October | 22 | 2.6% |
| November | 7 | 0.8% |
| December | 3 | 0.3% |
Bats you are most likely to see
| Species | Verified observations |
|---|---|
| Big Brown Bat | 149 |
| Little Brown Bat | 81 |
| Silver-haired Bat | 45 |
| Northern Hoary Bat | 31 |
| Western Small-footed Myotis | 29 |
| Townsend's Big-eared Bat | 26 |
| Long-eared Myotis | 20 |
| Mexican Free-tailed Bat | 12 |
In Colorado, May carries 13.5% of the year's bats sightings, about 5.2 points above an even month-to-month split. That makes it the 4th busiest of the twelve months, out of 12 months with recorded activity.
Activity is rising from April (5.2%) into May, and it heads toward June (15.6%) after. The busiest month is July (22.8%), so if timing is flexible, that window is the safer bet.
The bats most often recorded in Colorado are Big Brown Bat, Little Brown Bat and Silver-haired Bat. 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 bats you are most likely to see
- Big Brown Bat149 records
- Little Brown Bat81 records
- Silver-haired Bat45 records
- Northern Hoary Bat31 records
- Western Small-footed Myotis29 records
- Townsend's Big-eared Bat26 records
Plan your bat trip in Colorado
Start with live tours near Bent's Old Fort National Historic Site, then compare a nearby stay and a broader wildlife backup before you lock in the trip.
GetYourGuide
Live tours nearbySee live tours near Bent's Old Fort National Historic Site
Use the live GetYourGuide widget to compare local departures and activity styles close to the main bat viewing area.
Booking.com
Stay nearbyStay near Bent's Old Fort National Historic Site
Compare hotels, cabins and lodges close to the best bat viewing area in Colorado.
Viator
Broader backupBook a bat tour in Colorado
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 bats in Colorado in May?+
Yes. May accounts for 116 of the 861 verified bats sightings logged in Colorado across the year, which is 13.5% of the annual total.
Is May a good time to see bats in Colorado?+
May is the 4th busiest month. It is workable, though July and August is the stronger window for a reliable sighting.
What month is best for bats in Colorado?+
July is the single busiest month, with the broader peak running through July, August and June, based on 861 verified observations.
Which bats are you most likely to see in Colorado?+
The most-recorded species in Colorado are Big Brown Bat, Little Brown Bat and Silver-haired Bat, based on all-time iNaturalist counts.
See bats in Colorado in other months
More places to see bats
More wildlife in Colorado