Tree Frogs in Maine: identification guide and best places to start
Yes, tree frogs live in Maine. The two most common species are the gray tree frog and the spring peeper. You'll hear their calls on warm spring nights near wetlands, ponds, and forests. This guide covers where to look, when to go, and how to tell them apart.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated June 28, 2026.
Pacific chorus frog 路 Public domain CC0
Gray Treefrog 路 Fyn Kynd CC BY-SA
Gray Treefrog 路 Public domain CC0
- 5
- species recorded
- 3,139
- GBIF records
- April, May, August
- peak months
Verified species, source iNaturalist
2 types of tree frogs recorded in Maine
2 tree frog species have a verified observation record in Maine, each with at least 10 confirmed sightings. The full list, ranked by how often each is recorded, is below.
1
2
Plus 3 more recorded only rarely (fewer than 10 verified sightings). Counts from verified iNaturalist observations. Photos by iNaturalist observers, reused under the licence each observer chose.
Real sighting data, source iNaturalist
4,199 verified observations on iNaturalist of tree frog have been recorded in Maine, most often in April, May, August.
When tree frog are recorded in Maine
Yes, tree frogs live in Maine. The two most common species are the gray tree frog and the spring peeper. You'll hear their calls on warm spring nights near wetlands, ponds, and forests. This guide covers where to look, when to go, and how to tell them apart.
What species of tree frogs can be found in Maine?
Maine hosts two main tree frog species: the gray tree frog (*Hyla versicolor*) and the spring peeper (*Pseudacris crucifer*). The gray tree frog is larger (1.5-2 inches) with warty skin that can change from gray to green. Spring peepers are tiny (under 1 inch) and have a distinct X-shaped mark on their back. Check out ourtree frog identification hubfor photos of both species.
In Maine, tree frogs sightings usually improve when you slow down and match your first stop to where people are most likely to notice them. Use thestate wildlife huband theroute guideto 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.
Where are the best places to look for tree frogs in Maine?
Start near shallow water: ponds, swamps, slow streams, and flooded ditches. Backyard gardens with dense shrubs also work, especially after rain. Try the Scarborough Marsh or the Great Pond area. For a broader look at Maine's wildlife habitats, see ourMaine wildlife guides.
Most misses happen when people arrive at the wrong hour or expect nonstop activity. Build around what season or weather patterns help, keep one backup area in mind, and use theanimal facts pageplustour planning ideasto compare what a realistic outing looks like in Maine. 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.
When is the best time to spot tree frogs in Maine?
Spring evenings from April through June are prime, right after a warm rain. Summer nights can be good too, but dry spells quiet them. Early morning after heavy dew sometimes reveals them basking. Listen for the gray tree frog's short trill or the spring peeper's high-pitched peep.
See ourstate animal guidefor the next step.
How can you identify a tree frog from other similar frogs?
Tree frogs have large sticky toe pads for climbing, unlike ground frogs. Gray tree frogs show a mottled pattern and can shift color. Spring peepers have a dark cross on their back and are very small. They rarely sit in open water. Compare with herons that hunt them; ourheron guidescover those predators.
What habitats and behaviors do tree frogs prefer?
They live in deciduous forests with leaf litter and shrubs. Breeding happens in shallow water where females lay eggs. They eat insects and hide during the day under bark or in tree cavities. They share these woods with foxes and other mammals, seefox identification tips.
Where can you find tree frog habitats in Maine?
Use this interactive tool to explore wetlands and forested areas near you where tree frogs are likely to breed.
What tree frog gear or clothing should you consider?
A red-filter flashlight helps you spot them without startling them. If you want casual wear that shows your interest, check ourwildlife t-shirts. Here are a few options:
Amazon Rainforest Upper Orinoco Tree Frog Sweatshirt
A cozy sweatshirt featuring a vibrant tree frog design, perfect for cool Maine evenings.Check Price and Availability
Tree Frog T-Shirt
A classic tee with a simple tree frog graphic, ideal for everyday wear.Check Price and Availability
Vintage Tree Frog T-Shirt
A retro style shirt for those who appreciate vintage wildlife art.Check Price and Availability
Frequently asked questions about tree frogs in Maine
**Are tree frogs poisonous?** No, they are harmless to humans but may secrete a mild skin irritant. **Do tree frogs hibernate?** Yes, they overwinter under leaf litter or in crevices. **Can I keep a tree frog as a pet?** It's best to observe them in the wild; check local regulations before handling. **What do tree frogs eat?** Small insects like mosquitoes, flies, and moths. **Why do they call at night?** Males call to attract females during breeding season.
See ourtour planning ideasfor the next step.
Plan your trip
Best time to see tree frog in Maine: April, May, August
See the month-by-month sighting calendar.
Plan your tree frog sighting in Maine
3,139 verified tree frog records have been logged in Maine, most recently in 2026. See the GBIF records.
Where to look in Maine
- Acadia National Park 路 Wildlife Watching, Birdwatching 路 Find hotels
- Appalachian National Scenic Trail 路 Wildlife Watching, Birdwatching 路 Find hotels
- Katahdin Woods and Waters National Monument 路 Wildlife Watching, Birdwatching 路 Find hotels
- Saint Croix Island International Historic Site 路 Wildlife Watching 路 Find hotels
- Frances Perkins National Monument 路 Find hotels
- Maine Acadian Culture 路 Find hotels
Frequently asked questions
What tree frog species live in Maine?+
Maine hosts two main tree frog species: the gray tree frog (*Hyla versicolor*) and the spring peeper (*Pseudacris crucifer*). The gray tree frog is larger (1.5-2 inches) with warty skin that can change from gray to green. Spring peepers are tiny (under 1 inch) and have a distinct X-shaped mark on their back. Check out ourtree frog identification hubfor photos of both species. In Maine, tree frogs sightings usually improve when you slow down and match your first stop to where people are most likely to notice them. Use thestate wildlife huband theroute guideto 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.
Where can you see tree frogs in Maine?+
Maine hosts two main tree frog species: the gray tree frog (*Hyla versicolor*) and the spring peeper (*Pseudacris crucifer*). The gray tree frog is larger (1.5-2 inches) with warty skin that can change from gray to green. Spring peepers are tiny (under 1 inch) and have a distinct X-shaped mark on their back. Check out ourtree frog identification hubfor photos of both species. In Maine, tree frogs sightings usually improve when you slow down and match your first stop to where people are most likely to notice them. Use thestate wildlife huband theroute guideto 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 to see tree frogs in Maine?+
Maine hosts two main tree frog species: the gray tree frog (*Hyla versicolor*) and the spring peeper (*Pseudacris crucifer*). The gray tree frog is larger (1.5-2 inches) with warty skin that can change from gray to green. Spring peepers are tiny (under 1 inch) and have a distinct X-shaped mark on their back. Check out ourtree frog identification hubfor photos of both species. In Maine, tree frogs sightings usually improve when you slow down and match your first stop to where people are most likely to notice them. Use thestate wildlife huband theroute guideto 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.
Keep exploring
More places to see tree frog
More wildlife in Maine