Tree Frogs in Minnesota: identification guide and best places to start

Where are tree frogs most likely to be found in Minnesota?

Tree frogs in Minnesota are most often seen in deciduous woodlands, marshes, and near slow-moving water bodies. Look for them clinging to cattails, leaves, or tree bark close to water. Good areas include the northern hardwood forests and the Mississippi River backwaters. State parks like Itasca, Lake Maria, and Carlos Avery offer reliable access to their preferred habitats.

What season and weather conditions improve your odds?

The best time to spot tree frogs is from late April through July, especially after warm rains. They are most active at dusk and during the night. On humid evenings above 60°F, males call to attract mates, making them easier to locate by sound. Look for them near breeding ponds and wetlands during this window.

How do you identify Minnesota's tree frogs?

Two common species are the Eastern Gray Tree Frog and the Cope's Gray Tree Frog. Both have sticky toe pads, a light spot under each eye, and a mottled gray or green coloration that can change slightly. Key ID cues: they are about 1.5 inches long and have a trilling call that lasts several seconds. Cope's Gray Tree Frog has a faster, higher-pitched trill. Check our tree frog identification hub for side-by-side comparisons.

See our state animal guide for the next step.

What do tree frogs sound like in Minnesota?

Male tree frogs produce a musical trill that resonates through wetlands. The Eastern Gray Tree Frog's call is a slow, melodic trill lasting 1-3 seconds. Cope's Gray Tree Frog's trill is faster and higher, almost like a buzz. Learning these calls is the best way to locate them on a dark evening. Many apps can help you match the sound.

What are some common lookalikes and how do you tell them apart?

Spring Peepers are smaller (about 1 inch) and have a single dark X on their back. Chorus frogs are also smaller and lack the sticky toe pads. Tree frogs have large toe pads and a more useful body. If you see a small frog with suction-cup toes on a window or leaf, it's likely a tree frog. For more details, visit our Minnesota wildlife guide.