American Green Tree Frog (Hyla cinerea)
Order Anura, Family Hylidae, Genus Hyla, Species Hyla cinerea
Species
American Green Tree Frog (Hyla cinerea)
Family
Order Anura, Family Hylidae, Genus Hyla, Species Hyla cinerea
Size
Adults range from 3.2 to 6.3 cm (1.25 to 2.5 inches) in snout-to-vent length (SVL), with females generally growing larger than males. They are lightweight, typically weighing only a few grams.
Conservation
Evaluated as Least Concern by the IUCN Red List due to its wide distribution, tolerance for modified habitats, and generally stable population trends.
Description
The American Green Tree Frog is a brilliant green jewel of the wetlands and suburban gardens. Often found clinging vertically to window panes at night in search of insects attracted to indoor lights, this charming amphibian showcases the ultimate climbing adaptations with its suction-cup-like toe pads and vibrant coloration.
Key Features
Smooth bright green skin, prominent white or yellowish lateral stripes along the flanks, slender body, and distinct enlarged adhesive toe pads.
Physical Description
The American Green Tree Frog has a slender, streamlined body well-adapted for climbing. It possesses a distinct, slightly pointed snout, large prominent eyes with horizontal pupils, and a visible tympanum. Its limbs are long and slender with enlarged, sticky toe pads used for adhering to vertical and smooth surfaces like glass. Webbing on the feet is minimal.
Skin Texture & Coloration
The skin is remarkably smooth. Dorsal coloration is typically bright leaf green, though it can shift to yellowish or brown depending on temperature and background. A characteristic white, cream, or yellowish stripe runs along each side of the body from the upper jaw or eye down to the groin, often bordered thinly with dark pigment. The ventral surface is pale white or yellow.
Distinguishing Features
The key diagnostic features are the smooth green skin and the distinct pale (white to yellow) lateral stripes running down each side of the body. Enlarged adhesive toe pads and the lack of prominent dorsal warts also differentiate it from toads and many other frogs.
Habitat
Found primarily in warm, humid lowland habitats associated with permanent or semi-permanent bodies of water such as swamps, ponds, lakeshores, marshes, and slow-moving streams. They frequently inhabit dense aquatic vegetation, shrubs, and trees, and frequently venture onto human-made structures like walls and windows near lights.
Geographic Range
Native to the southeastern United States, ranging from eastern Texas and Oklahoma eastward to Florida, and north to Delaware, Maryland, and southern New Jersey, with isolated populations further inland.
Behavior
Nocturnal and arboreal, spending daylight hours hiding in vegetation or damp crevices. They are exceptionally agile climbers and leapers. When approached, they may leap away or remain motionless, relying on their green camouflage.
Diet & Feeding
Strictly carnivorous, feeding primarily on small flying insects such as mosquitoes, moths, flies, and beetles. They use a sit-and-wait ambush strategy, snapping up passing prey with a sticky, projectile tongue.
Reproduction
Breeding occurs from spring through late summer, triggered by heavy spring rains and rising temperatures. Males call from emergent vegetation in shallow water. Females deposit clutches of up to 400 eggs attached to submerged plant stems or debris. There is no parental care.
Vocalizations
The advertisement call is a loud, nasal, quacking or barking sound ('quarp-quarp-quarp') repeated rhythmically, often forming large choruses near water bodies during warm, humid nights.
Life Cycle
Eggs hatch into aquatic tadpoles within a few days. The larval stage lasts roughly 6 to 8 weeks, culminating in metamorphosis into tiny froglets. Sexual maturity is typically reached within one year, and the total lifespan can exceed 5 years in captivity.
Conservation Status
Evaluated as Least Concern by the IUCN Red List due to its wide distribution, tolerance for modified habitats, and generally stable population trends.
Toxicity & Defense
Non-toxic to humans, though skin secretions can be mildly irritating to mucous membranes. Their primary defense is rapid leaping, camouflage, and nocturnal habits.
Ecological Role
Acts as an important predator of insect populations and serves as a vital prey base for larger birds, snakes, and mammals, functioning as a key link in wetland food webs.
Similar Species
Barking Tree Frog (Hyla gratiosa), which is heavier-bodied and has granular skin with stippled markings; Squirrel Tree Frog (Hyla squirella), which is generally smaller and lacks the continuous bold lateral stripe.
Observation Tips
Best observed at night using a flashlight near exterior house lights or around the edges of ponds and marshes during warm, humid summer evenings by listening for their characteristic quacking calls.
Handling & Safety
Harmless to humans and non-venomous. If handling is necessary, hands should be clean, wet, and free of soaps, lotions, or insect repellents to protect the frog's permeable skin.
Seasonal Activity
Active from spring through autumn. In the northern parts of their range, they undergo brumation during winter, burying themselves under leaf litter, loose bark, or soil until spring temperatures return.
Cultural Significance
Frequently featured in southern folklore as weather prophets, as their calling often intensifies before rainstorms. They are also popular mascots and imagery in regional nature guides and children's books.
Interesting Facts
They are famous for their ability to lighten or darken their skin color rapidly to match their background or regulate body temperature. They are also popular pets due to their docile nature and striking appearance.