Red-Eyed Tree Frog Night Walk La Fortuna, Costa Rica
The Red-Eyed Tree Frog (Agalychnis callidryas) is one of the most iconic species of Costa Rica’s tropical rainforest. Known for its striking appearance and nocturnal lifestyle, this fascinating amphibian can be spotted during a Night Walk in La Fortuna, San Carlos, near the majestic Arenal Volcano.
Where to See the Red-Eyed Tree Frog in La Fortuna
These frogs thrive in tropical and humid forests, often found in the lowlands and moist mountain forests up to 1,250 meters above sea level. During the day, they rest hidden under leaves, but at night their vivid red eyes, green body, and orange feet stand out against the rainforest backdrop.
If you join a Night Walk near Arenal Volcano, you’ll have a great chance to see them up close in their natural habitat. They are often referred to as Red-Eyed Leaf Frogs because of their behavior of clinging to the undersides of leaves.
Why the Red-Eyed Tree Frog is Special
With their bright green bodies, blue flank stripes, and orange webbed feet, these frogs are among the most photogenic creatures in Costa Rica. They are also social animals, often found in small groups of 4 to 8, where their interactions are fascinating to observe.
In Costa Rica’s rainforests around La Fortuna, you may even encounter rare variations, such as the “lutino,” an albino type with a yellowish back and silver eyes. Spotting one during your night tour in Arenal is a truly magical experience.
Agalychnis callidryas Frog History and Classification
The species was first described in 1862 by the American herpetologist Edward Drinker Cope, who originally named it Hyla callidryas. Later, in 1864, he placed it in the genus Agalychnis.
The name comes from Greek origins:
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“Aga” (full of) and “lychnos” (light or brilliant), reflecting the frog’s vibrant colors.
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“Callidryas” combines “kallos” (beautiful) and “dryas” (tree nymph), highlighting its stunning appearance and tree-dwelling lifestyle.
Agalychnis callidryas Amphibians of Arenal Volcano
As amphibians (from the Greek amphibios, meaning “living a double life”), red-eyed tree frogs spend their early stages as aquatic tadpoles before transforming into land-dwelling adults. This fascinating transformation makes them a symbol of resilience and adaptability in Costa Rica’s ecosystems