Tree Frogs in Wyoming: identification guide and where to start looking
Wyoming is home to only a few tree frog species, primarily the Boreal Chorus Frog. If you're trying to identify tree frogs in the state, focus on small size, toe pads, and buzzing calls. Best odds are in shallow ponds and marshes from April to June, especially in the eastern plains and western valleys.
Wyoming is home to only a few tree frog species, primarily the Boreal Chorus Frog. If you're trying to identify tree frogs in the state, focus on small size, toe pads, and buzzing calls. Best odds are in shallow ponds and marshes from April to June, especially in the eastern plains and western valleys.
What tree frog species are found in Wyoming?
Three main tree frog species occur in Wyoming: the **Boreal Chorus Frog** (*Pseudacris maculata*), the **Western Chorus Frog** (*Pseudacris triseriata*), and the **Pacific Treefrog** (*Pseudacris regilla*) in the far west. The Boreal Chorus Frog is by far the most widespread. The Pacific Treefrog is limited to the extreme northwestern corner, near Yellowstone. All are small (1-2 inches) with smooth skin, large toe pads, and a dark stripe through the eye. For a full overview of their ranges, see ourtree frog hub.
How can you identify different tree frog species in Wyoming?
Key ID markers: **Boreal Chorus Frog** has three dark dorsal stripes (sometimes broken) and a white upper lip. **Western Chorus Frog** looks similar but with a more contrasting color pattern and a shorter snout. **Pacific Treefrog** has a dark mask from snout to shoulder and a rounded toe pad. All have a V-shaped mark between the eyes. Listen for their calls: Boreal Chorus Frog sounds like a fingernail running over a comb; Pacific Treefrog gives a two-part 'rib-bit'. Lookalikes include spadefoot toads (vertical pupil) and juvenile leopard frogs (larger, more spots). For more on frog identification, visit ourWyoming wildlife page.
Where in Wyoming should you look for tree frogs?
Start in shallow wetlands with emergent vegetation: prairie potholes in the east (Laramie Plains, Shirley Basin), beaver ponds in the mountains, and marshy edges of rivers like the Green River in the west. The best odds are in **eastern Wyoming** around Wheatland, Laramie, and the North Platte River. In the west, focus on **Yellowstone National Park** (Pacific Treefrog) and the Jackson Hole valley. You can also check ourWyoming wildlife guidefor specific hotspot recommendations.
See ourstate animal guidefor the next step.
When is the best time to see tree frogs in Wyoming?
Tree frogs are most active during their breeding season, which typically runs from **April to June**, depending on elevation and snowmelt. In low-elevation plains (4000-5000 ft), they start calling in April. In mountain valleys (6000-8000 ft), breeding peaks in May and early June. Visit ponds on warm, rainy evenings just after sunset. You'll hear males calling from shallow water. Daytime sightings are possible in damp, hidden spots under logs or leaf litter.
What sounds do Wyoming tree frogs make?
The Boreal Chorus Frog produces a rapid, ascending trill that lasts 1-2 seconds, often described as a 'fingernail on a comb' sound. The Western Chorus Frog's call is similar but slower and lower-pitched. The Pacific Treefrog is the state's most musical: a short 'rib-bit' or 'cre-ek' repeated every few seconds. Calling peaks on warm (50°F+) evenings. Audio recordings are available on thetree frog identification page.
How do tree frogs differ from similar species?
Spadefoot toads (both Plains and Great Basin) have a vertical pupil and a distinct 'spade' on the hind foot – tree frogs have horizontal pupils and rounded toe pads. Northern Leopard Frogs are much larger (2-4 inches) with large spots, while chorus frogs have stripes or blotches. Boreal Chorus Frogs also have a dark triangle between the eyes – a feature absent in leopard frogs. In Wyoming, juvenile leopard frogs are the most common misidentification. Practice checking dorsal stripe patterns and toe pad size.
Are there any rare tree frogs in Wyoming?
The Pacific Treefrog is rare in Wyoming, found only in the extreme northwest (Yellowstone and Teton counties). It is listed as a Species of Greatest Conservation Need (SGCN) in some state planning documents, but populations are considered stable. The Boreal Chorus Frog is common statewide. The Western Chorus Frog is also secure. Habitat loss from draining wetlands is the main threat, but overall, Wyoming's tree frogs are not currently endangered. You can explore conservation topics on ourWyoming wildlife page.
Show your tree frog spotting pride with tree frog tees
After a day of listening to chorus frogs in Wyoming, wear your find with these tree frog shirts:
### Amazon Rainforest Upper Orinoco Tree Frog Sweatshirt
A cozy sweatshirt featuring a colorful tropical tree frog, perfect for camping evenings.Check Price and Availability
### Tree Frog T-Shirt
Classic tee with a realistic tree frog graphic, a nod to the chorus frogs you heard in the field.Check Price and Availability
### Vintage Tree Frog T-Shirt
Retro-style shirt with a faded tree frog print, great for naturalists.Check Price and Availability
Browse the full collection oftree frog apparel.
Frequently Asked Questions
**Why haven't I seen tree frogs in Wyoming?** Tree frogs are small and secretive. Listen for their calls at night in spring near shallow water. **Are tree frogs safe to handle?** Yes, but wash hands afterward – their skin absorbs chemicals. **Do tree frogs live in the mountains?** Yes, Boreal Chorus Frogs occur up to 10,000 ft in the Rockies, but usually near water. **What is the difference between a tree frog and a chorus frog?** In Wyoming, all tree frogs are actually chorus frogs – they are in the same genus (*Pseudacris*). True tree frogs like the Gray Treefrog do not occur here.
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