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9 Species of Tree Frogs in Maryland (Pictures)

An arboreal species, tree frogs, feel at home among trees. Besides being excellent climbers, they are also strong swimmers, and most species can jump over 40 times their height to reach tall branches. Tree frogs find various wetland habitats in Maryland homes, including floodplain forests, bogs, shrub wetlands, and upland depressional swamps. Of the 21 different frog species in the state, there are 9 tree frogs in Maryland. Find out where you can spot these fascinating animals in the wild and interesting facts about them.

9 tree frogs in Maryland

1. Gray tree frog

Common gray treefrog
Common gray treefrog | Image credit: Amphibianboss.com

Scientific name: Hyla versicolor

Gray tree frogs are commonly a mottled green, gray, or brown coloring similar to lichen. They also have an inner thigh that is golden yellow or orange-ish with black mottling. These tree frogs grow between 1.25 to 2 inches long.

These little guys are common tree frogs in the U.S. and throughout most of Maryland in habitats near shallow water bodies, including seasonal wetlands. They commonly hang out in trees or shrub trunks and branches.

2. Cope’s gray tree frog

cope’s gray tree frog perching
Cope’s gray tree frog | image by USFWS Mountain-Prairie via Flickr

Scientific name: Hyla chrysoscelis

The Cope’s gray tree frog is very similar in appearance to the gray tree frog but can be distinguished easily by the difference in their call. This species’ call is faster and more abrupt. Their coloring is mottled gray to light green and they can grow between 1.25 and 2 inches long.

These frogs are the more common species in the Coastal Plain regions of Maryland. They are comfortable in woodlands and suburban habitats, including near buildings and in flooded flower pots.

3. Green tree frog

Green tree frog perching
Green tree frog | image by amandil_eldamar via Flickr

Scientific name: Hyla cinerea

Green tree frogs are 1.25 to 2.25-inch frogs that are usually bright green but can also be dull yellowish-green or slate gray. They are distinctive by their yellowish or white stripe along their side from their upper lip to the groin area.

In Maryland, they can be found in the coastal areas by swamps, lakes, streams, and freshwater or brackish marshes. They have a nasal call that can be heard in large choruses during the breeding season from late April to August.

4. Spring peeper

Spring peeper
Spring peeper | image by U.S. Fish and Wildlife Service Northeast Region

Scientific name: Pseudacris crucifers

Spring peepers are small yellow, grey, olive, or brown frogs growing no more than 1.5 inches long. They are recognizable by the X-shaped pattern on their back and the distinctive peep whistle sound they make.

You can find them throughout Maryland, especially in woodland areas that were recently cut over with brushy second growth. During the breeding season, they gather near shallow semi-permanent or temporary water bodies.

5. Barking tree frog

Barking tree frog
Barking tree frog | image by Ashley Wahlberg (Tubbs) via Flickr | CC BY-ND 2.0

Scientific name: Hyla gratiosa

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A large tree frog, the Barking tree frog, can grow over 2 inches long, with the record being 2.75 inches. They are typically a shade of green with round, granular rings on their back and large toe pads. They get their name from the unique barking call and explosive doonk sounds they make.

While these frogs spend most of their time in high treetops, they also burrow and need habitats with sandy soils. In Maryland, you can find them only in Coastal Plain counties, including in the Carolina Delmarva Bays, vernal pools, and nearby sandy-soiled woods.

6. Eastern cricket frog

Eastern cricket frog
Eastern cricket frog | image by Judy Gallagher via Flickr | CC BY 2.0

Scientific name: Acris crepitans crepitans

Unlike other tree frog species, the Eastern cricket frog does not climb trees. They are small warty frogs, growing around 1 inch long and typically brown with greenish blotches on their back and ragged stripes down their thighs. Their call is a gick gick sound that starts slow and picks up in speed.

They live throughout most of Maryland in or near shallow, permanent water bodies. They also enjoy hanging out in sunny, grassy areas on the edges of ponds, wetlands, and ditches.

7. New Jersey chorus frog

New Jersey chorus frog
New Jersey chorus frog resting | image by milkweedhunter via iNaturalist | CC BY 4.0

Scientific name: Pseudacris kalmi

The New Jersey chorus frog is a small 0.75 to 1.5-inch-long frog that’s dark brown to pale gray with whitish undersides. They have three broad stripes on their back and only slightly webbed feet.

In Maryland, they are mainly found on the eastern shore, including the Delmarva Peninsula. They can live in various open or forested habitats and typically breed near open shallow water bodies, including flooded pastures, roadside ditches, and hayfields.

8. Upland chorus frog

Upland chorus frog
Upland chorus frog | image by Northeast Coastal & Barrier Network via Flickr | CC BY-SA 2.0

Scientific name: Pseudacris feriarum

Upland chorus frogs are under 1.5 inches long and look similar to the New Jersey chorus frog. However, they are slightly thicker and have off-white undersides with occasional spots. Their sound also resembles a finger running up a comb and can frequently be heard from February to April.

These frogs are most common on the western shore and parts of western Maryland. They can be found near slow-moving or non-moving waters as well as in developed areas and urban environments.

9. Mountain chorus frog

Mountain chorus frog
Mountain chorus frog | image by iNaturalistvia Wikimedia Commons

Scientific name: Psuedacris brachyphona

The Mountain chorus frog has a small, robust body growing between 1 to 1.25 inches long. They are light brown or tan to yellowish and have two bands that may touch to form an X. You can also sometimes see a dark triangle between their eyes.

You can only find them on the Allegheny Plateau of Garrett and Allegany Counties in Maryland. They prefer floodplains and moist hillside forests but can also be found in drainage ditches. Their sound is similar to the Upland chorus frog but with a shorter trill interval.

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