Overview
Miles’s Robber Frog (Craugastor milesi) is a rare, montane stream-adapted amphibian endemic strictly to the cloud forests of the Sierra de Omoa in northwestern Honduras. Believed to have gone entirely extinct during the catastrophic Central American chytridiomycosis epidemic of the late 1980s, the species was miraculously rediscovered in 2013 in a tiny, isolated mountain stream sanctuary. Featuring a cryptic bronze-brown body and specialized toe pads for clinging to wet rock faces, it is an iconic symbol of amphibian survival and highland cloud forest resilience.
Biology and Physical Characteristics
Craugastor milesi displays anatomical specializations tailored for life in torrential mountain splash zones. Its body is compact and flattened, featuring a dark brown to coppery dorsal coloration adorned with subtle darker chevrons that blend into stream gravel. The skin is granular with distinct lateral ridges. Its digits terminate in enlarged, expanded disc pads that provide vital surface adhesion on wet, algae-covered boulders battered by waterfall mist. Like all members of the family Craugastoridae, it undergoes direct development: eggs laid on moist forest soil bypass the free-swimming aquatic tadpole stage completely, hatching directly into tiny, fully formed miniature frogs.
Behavior and Ecology
Miles’s Robber Frogs are nocturnal inhabitants of riparian spray zones, spending the day wedged inside deep, humid rock crevices or beneath saturated moss cushions adjacent to rushing cascades. When darkness falls, they emerge onto spray-slick boulders to forage on tiny aquatic flies, springtails, and spiders. Males emit soft, high-pitched chirping vocalizations that can barely be heard over the roar of tumbling mountain water. Because their eggs are laid terrestrially in damp leaf mold away from stream currents, they rely entirely on the high ambient humidity maintained by pristine cloud forest canopies.
Conservation and Human Impact
The species is officially classified as Critically Endangered by the IUCN and ranks among the rarest amphibians in Central America. Although once abundant throughout the cloud forests above San Pedro Sula, populations collapsed by more than 99 percent due to the fungal pathogen Batrachochytrium dendrobatidis combined with rampant deforestation from coffee cultivation and illegal timber extraction. Conservation programs managed by the Honduran Amphibian Rescue and Conservation Center (HARCC) conduct field monitoring, pathogen testing, and captive-assurance breeding to secure the future of the remaining wild colonies.
Interesting Factoid
After vanishing without a trace for over 25 years following a devastating fungal epidemic, Miles’s Robber Frog was rediscovered in 2013 clinging to the exact same spray-slick waterfall rocks where it was first studied in the 1980s.
Last updated: October 2026