Tree Frogs in Wyoming: Identification Guide and Where to Start Looking

1. Are Tree Frogs Found in Wyoming?

Wyoming is home to a couple of species often called tree frogs, but true tree frogs (family Hylidae) are rare here. The most widespread is the boreal chorus frog (Pseudacris maculata), which looks and acts like a tree frog. It has small toe pads and climbs low vegetation. Another is the Pacific tree frog (Pseudacris regilla), found only in the far northwest corner of the state. So yes, you can find tree frogs in Wyoming, but your best bet is the chorus frog.

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2. What Are the Most Useful ID Markers for Wyoming Tree Frogs?

Focus on these field marks: size (under 1.5 inches), toe pads (small but visible discs on the tips), and color (variable: green, tan, brown, often with a dark eye stripe or triangle between the eyes). Their skin is smooth, not warty. A key clue: chorus frogs have a dark stripe through the eye, while Pacific tree frogs have a dark mask from nose to shoulder. Listen for a short, raspy trill in spring.

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3. How Do Toe Pads Help You Identify Tree Frogs?

Toe pads are the defining feature of true tree frogs. They are small, sticky, disc-like structures at the tip of each toe that help the frog grip smooth bark and leaves. When viewed up close under good light or through binoculars, these pads are visible as small bumps. Compare this to other Wyoming frogs: boreal toads have bumpy skin but no toe pads, and spotted frogs have webbed feet without pads. The presence of toe pads, combined with small body size, is your primary identification tool.

4. What Are the Likely Lookalikes in the Region?

The main lookalike is the boreal toad (Anaxyrus boreas), which is larger (2-4 inches), has warty skin, and no toe pads. Another is the Columbia spotted frog (Rana luteiventris), which is bigger, has webbed feet but lacks toe pads, and is mostly aquatic. The striped chorus frog (Pseudacris triseriata) is nearly identical to the boreal chorus frog but has three stripes; they hybridize. Use the dark eye stripe and toe pads to separate true tree frogs from other frogs.

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5. Where in Wyoming Do People Usually Spot Tree Frogs?

Most sightings occur in the southeastern and eastern plains, especially near the Platte River drainage, and in the Bighorn Basin. Look in marshy meadows, pond edges, and slow streams with plenty of cattails or sedges. In the west, Pacific tree frogs are limited to the Tetons and Yellowstone region. Start your search in Shoshone National Forest or Medicine Bow National Forest around wetlands below 8,000 feet. Tree frogs avoid dry uplands and alpine zones; stick to riparian zones and wetland margins.

6. What Is the Best Time of Year for Confident Sightings?

The best window is mid-March through June, right after snowmelt when frogs breed and call. Males call from shallow water or low vegetation. Early morning and dusk give the best odds. After July, they become secretive and harder to find. If you want a guaranteed look, target ephemeral ponds in April and May when they are most active. These temporary pools dry up by mid-summer but are frog breeding hotspots.

7. How Can You Identify Tree Frogs by Their Call?

Boreal chorus frogs produce a short, raspy trill that rises in pitch, lasting 1-2 seconds. Pacific tree frogs have a two-part call: a short croak followed by a trill. Listen near water on warm spring evenings. The call is the easiest way to confirm presence without a visual. Temperature matters: calls intensify when air and water are above 50F. Record calls on your phone and compare them to online frog call databases.

8. What Is Coloration Variation in Wyoming Tree Frogs?

Boreal chorus frogs range from pale tan to olive green to brown. Some individuals have a bold dark triangle between the eyes, while others have a thin line or no marking at all. The dark eye stripe is consistent across most individuals. This variation can make identification tricky in photos, but the combination of toe pads, small size, and the eye stripe is diagnostic. Pacific tree frogs in Wyoming are typically gray-green or bronze with less dramatic patterning.

9. How Do Habitat and Season Affect Tree Frog Identification?

In spring, tree frogs are easy to find because they cluster at breeding sites and call noisily. By mid-July, they disperse into thick vegetation and stop calling, making detection much harder. They favor wetlands with shallow water and emergent plants where tadpoles can develop safely. Understanding that the same frog is loud and visible in March but silent and hidden by August helps set realistic expectations for your search.

10. What Are the Key Differences Between Boreal and Pacific Tree Frogs?

Boreal chorus frogs are smaller (0.75-1.25 inches), have a more prominent dark eye stripe, and produce a raspy trill. Pacific tree frogs are slightly larger (1-1.5 inches), have a dark mask across the nose and shoulder, and have a two-part call. Both have toe pads, but Pacific tree frogs are slightly more robust. In Wyoming, boreal chorus frogs are statewide, while Pacific tree frogs are restricted to the northwest mountains near Yellowstone and the Tetons.

11. What Products Can Help You Celebrate Your Tree Frog Sighting?

After spotting your first tree frog in Wyoming, you might want to commemorate the moment. Easy Street Markets offers a range of wildlife-themed apparel. Check out these options:

Amazon Rainforest Upper Orinoco Tree Frog Sweatshirt

A cozy sweatshirt featuring a vibrant tree frog design. Perfect for cool Wyoming evenings.Check Price and Availability

Tree Frog T-Shirt

A classic tee with a simple tree frog graphic. Lightweight and comfortable for field use.Check Price and Availability

Vintage Tree Frog T-Shirt

A retro-style shirt that shows off your herping finds. Great conversation starter.Check Price and Availability

Browse more wildlife shirts at our/t-shirtspage.

12. Frequently Asked Questions About Tree Frogs in Wyoming

**Q: Are tree frogs poisonous in Wyoming?** A: No, Wyoming tree frogs are not poisonous. They secrete mild skin irritants but are harmless to humans.

**Q: Can I keep a Wyoming tree frog as a pet?** A: It is legal to collect some species with a fishing license, but releasing them is discouraged. Check local regs.

**Q: Do tree frogs climb trees in Wyoming?** A: They climb low vegetation and shrubs, but true tree-climbing is rare due to the lack of large tree frogs. They mostly stay near the ground.

**Q: What is the difference between a chorus frog and a tree frog?** A: Chorus frogs are smaller, have less pronounced toe pads, and call from the ground more often. True tree frogs have larger pads and climb higher.

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