Pallid Bat

Pallid Bat

Antrozous pallidus

Silhouette: Margot Michaud · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Big Bend National Park
14 Verified sightings at Big Bend National Park From 2019 to 2026
11 Verified sightings across all 4 parks From 2019 to 2026
August Best month highest sighting rate
☀️🌙 Day & Night When it's spotted Active throughout day and night

About the Pallid Bat

The pallid bat (Antrozous pallidus) is a species of bat that ranges from western Canada to central Mexico. It is the sole species of its genus and is closely related to Van Gelder's bat (Bauerus dubiaquercus), which is sometimes included in Antrozous. Although it has in the past been placed in its own subfamily (Antrozoinae) or even family (Antrozoidae), it is now considered part of the subfamily Vespertilioninae and the tribe Antrozoini.

It is the state bat of California. Pallid bats have a head and body length of approximately 2.75 inches (6.2-7.9 cm), forearm length of approximately 2.1 inches (4.5–6 cm), a tail of approximately 1.75 inches (3.9-4.9 cm), and a wingspan of 15-16 inches (38–40 cm). They weigh 14-25 grams. These bats are large, with long forward pointing ears (over 2.5 cm). Fur is pale at the roots, brown on their back, with a light underside. Pallid bats have a blunt piglike snout. The dental formula for pallid bats is 1.1.1.32.1.2.3 × 2 = 28. The bacula of pallid bats are wedge or spade-shaped, generally with a short narrow base which widens and then tapers towards the tip. The bone also has a characteristic downward 'dip' around the midpoint, with... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Saguaro National Park 🇺🇸 United States
<5%
2 Yosemite National Park 🇺🇸 United States
Insufficient data
3 Bahía de Loreto National Park 🇲🇽 Mexico
Insufficient data
4 Joshua Tree National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Pallid Bat in Big Bend National Park?

About 10% of wildlife watchers report a Pallid Bat sighting in Big Bend National Park, based on 14 verified sightings from GBIF citizen-science data.

When is the best time to see Pallid Bat in Big Bend National Park?

August has the highest sighting rate for Pallid Bat in Big Bend National Park in our monthly data.

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