Cope’s Gray Treefrog (Hyla chrysoscelis)

Cope’s Gray Treefrog (Hyla chrysoscelis)

Cope's Gray Treefrog (Hyla chrysoscelis)
Outline map showing the southeastern United States, with Georgia highlighted among neighboring states and the Atlantic coastline visible—an area where Cope's Gray Treefrog (Hyla chrysoscelis) can often be found.
Black and white map showing the northeastern and midwestern regions of the United States, including state borders but no labels or additional details—perfect for illustrating the range of Cope's Gray Treefrog (Hyla chrysoscelis).

Description: A relatively large treefrog (3.2–5.1 cm; 1.25–2 in) with granular skin, a sturdy build, and large adhesive toe pads. Heavier-bodied than Pine Woods (D. femoralis) or Squirrel Treefrogs (D. squirellus), which it may resemble. Coloration is highly variable, ranging from mottled gray to light green, and may shift with environment, temperature, or activity. Typically has a pale spot beneath the eye. Inner thighs display bright yellow to orange flash colors, visible when legs are extended. Although often referred to simply as “gray treefrog,” the true Gray Treefrog is D. versicolor and is not located in Georgia or South Carolina.

Range and Habitat: Widespread across the Southeast, excluding peninsular Florida. Abundant in South Carolina and Georgia, especially within the Piedmont and Mountain regions. Occupies various wooded habitats but is most common in mature deciduous forests. Breeding occurs in fishless wetlands, including vernal pools, woodland ponds, and other ephemeral water bodies.

Habits: Arboreal for much of the year, often high in trees. Most frequently encountered during the breeding season (March–August, peaking in early summer) when males call from shrubs and vegetation surrounding wetlands. Individuals conceal themselves in tree cavities, under bark, or other secluded refuges during the day. Primarily nocturnal insectivores that feed on small invertebrates.

Call: A short, musical trill delivered at a rapid rate. D. chrysoscelis produces a faster, more “buzz-like” trill than D. versicolor.

Interesting Facts:

  • D. chrysoscelis (diploid) and D. versicolor (tetraploid) are morphologically indistinguishable and were once regarded as a single species. Differentiation requires location, call analysis, or genetic testing.
  • Skin secretions contain toxins that may irritate eyes, lips, mucous membranes, and open cuts; hand washing is recommended after handling.

Conservation Status: Widespread and abundant; not legally protected in the Southeast.

A Cope's Gray Treefrog clings to a brown tree branch, blending in with the bark; green leaves and blurred forest are visible in the background.
A Gray Treefrog with rough, mottled gray skin and a yellow patch on its hind leg clings to a white surface—this is likely Hyla chrysoscelis, also known as Cope's Gray Treefrog.