Buckley's Slender-legged Treefrog

Buckley's Slender-legged Treefrog

Osteocephalus buckleyi

Silhouette: Dmitry Bogdanov (vectorized by T. Michael Keesey) · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~10% · With luck
at Yasuní National Park
5 Verified sightings at Yasuní National Park From 2019 to 2026
9 Verified sightings across all 2 parks From 2019 to 2026
April Best month highest sighting rate
🌙 Nocturnal When it's spotted during nighttime hours (6pm–6am)

About the Buckley's Slender-legged Treefrog

Osteocephalus buckleyi, also known as Buckley's slender-legged treefrog, is a species of frog in the family Hylidae. It is found along the periphery of the Amazon Basin in Bolivia, Peru, Ecuador, Colombia, northeastern Brazil, Venezuela, Guyana, Suriname, and French Guiana, and also in the Orinoco Delta in Venezuela. It is probably a species complex. Some sources treat Osteocephalus vilmae from Ecuador and Peru as a valid species.

The specific name buckleyi honours Clarence Buckley, a collector active in Ecuador in 1880s and who collected the type series. Males measure 38–45 mm (1.5–1.8 in) and females 40–51 mm (1.6–2.0 in) in snout–vent length. The dorsum is pale green with dark blotches. A yellow or coffee colored medial vertebral stripe might be present. The flanks vary from cream to light brown with darker spots that can approach black. In males, the dorsal skin has a mixture of small and large tubercles with keratinized points, whereas in adult females the dorsal tubercles are very dispersed. The head is almost as long as wide; the snout is truncated. The finger disks are expanded.

Natural habitats of Osteocephalus... Wikipedia →

Closest Relatives at Yasuní National Park

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Yasuní National Park 🇪🇨 Ecuador
~10%
2 Cuyabeno Wildlife Reserve 🇪🇨 Ecuador
Insufficient data

Quick answers

What are the chances of seeing a Buckley's Slender-legged Treefrog in Yasuní National Park?

About 10% of wildlife watchers report a Buckley's Slender-legged Treefrog sighting in Yasuní National Park, based on 5 verified sightings from GBIF citizen-science data.

When is the best time to see Buckley's Slender-legged Treefrog in Yasuní National Park?

April has the highest sighting rate for Buckley's Slender-legged Treefrog in Yasuní National Park in our monthly data.

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