Bats in Colorado: Where to Look and What Signs to Watch For

Where are bats most likely found in Colorado?

Bats in Colorado favor areas with abundant insects and roosting sites. Look along riparian corridors, near ponds, lakes, and slow-moving rivers. Hotspots include Rocky Mountain National Park, the canyons of the Colorado National Monument, and old mines or abandoned buildings on the eastern plains. For a full overview of Colorado wildlife opportunities, see our Colorado wildlife page.

In Colorado, bats sightings usually improve when you slow down and match your first stop to where the animal is most likely in the state. Use the state wildlife hub and the route guide to narrow your first area, then check access, weather, and distance before you settle in. A short walk with one clear viewing plan often beats covering too much ground, especially when habitat changes fast from open edges to brush, wetlands, timber, shoreline, or neighborhood cover.

When is the best time of day or season to see bats?

Bats are nocturnal and most active at dusk and dawn. In Colorado, the best season runs from late May through September, when insects are plentiful and bats are raising young. Winter is largely inactive as most bats hibernate or migrate. Check our bat species hub for details on seasonal behavior.

Most misses happen when people arrive at the wrong hour or expect nonstop activity. Build around time-of-day or seasonal behavior, keep one backup area in mind, and use the animal facts page plus tour planning ideas to compare what a realistic outing looks like in Colorado. If movement slows, stay longer at one promising spot, listen for calls or watch for edge movement, and reset around weather, light, water, or feeding changes instead of jumping to a totally new area too early.

What field signs should a beginner look for?

Start by looking for bat guano (droppings) under roosts like bridges, barns, or rock overhangs. Dark stains from body oils at entry points, a musky ammonia smell, and faint squeaking sounds at dusk are all clues. Binoculars help spot them emerging against the sky.

See our state animal guide for the next step.

What bat species are commonly seen in Colorado?

The Big Brown Bat, Little Brown Myotis, and Hoary Bat are among the most widespread. The Mexican Free-tailed Bat is also common in the southern parts. Each has distinct flight patterns and preferred habitats. Learn more on our bat species hub.

How can you observe bats ethically?

Never disturb roosting bats, especially during the maternity season (June-July). Keep noise low, avoid shining flashlights directly into roosts, and maintain a respectful distance. For more on bat conservation, visit our bat hub.