The Mountain Chicken: A Critically Endangered Frog Facing Global Threats

The mountain chicken is not a bird at all. It is a critically endangered frog formally known as Leptodactylus fallax, once one of the largest frogs in the world. Today this amphibian survives on just two islands in the Caribbean: Montserrat and Dominica.

The mountain chicken earned its name because locals say it tastes like chicken when cooked. Once hunted as a local delicacy and even considered a national dish, this giant ditch frog now serves as a flagship species for conservation.

The Giant Ditch Frog With a Big Appetite

The mountain chicken frog ranks among the largest frogs on Earth. Its large size, powerful hind legs, and reddish‑brown coloring help it blend into leaf litter inside its forest habitat.

This critically endangered frog has a voracious appetite, hunting other frogs, small mammals, and vertebrates. When threatened, mountain chickens can emit a squawking alarm call.

Unlike many amphibians, the female lays her eggs inside a nesting burrow rather than in open water. She lays both fertile eggs and unfertilized ones—called infertile eggs—that feed the tadpoles.

Instead of drifting in ponds, tadpoles metamorphose safely inside a foam nest created in the burrow.

How a Deadly Microscopic Fungus Changed Everything

Historically abundant on Montserrat and Dominica, the species was devastated by chytrid fungus—a microscopic pathogen that has wiped out amphibians worldwide.

Chytrid attacks the skin of amphibians, disrupting their ability to absorb water and salts. The disease has pushed many species to extinction.

In the early 2000s, the mountain chicken population crashed, declining by over 85 percent within 18 months.

Habitat loss from human settlement, volcanic eruptions, and storms such as Hurricane Maria have compounded the threat, testing the resilience of the remaining frogs.

From Human Consumption to Mountain Chicken Conservation

Historically, local communities hunted the frogs for food, giving the species cultural significance. As numbers plummeted, governments and scientists shifted focus to conservation.

Researchers launched scientific programs to understand breeding, disease resistance, and whether treated frogs could survive in the wild.

Captive breeding programs now operate in biosecure facilities, creating a safety net population away from the fungus.

Institutions such as Chester Zoo have successfully bred the species under semi‑wild conditions, working toward reintroduction of treated frogs into protected habitats.

Life Cycle, Burrows, and Mother Frogs

During the wet season, a male mountain chicken digs a nesting burrow. After mating, the female stays near the foam nest, guarding the developing tadpoles underground.

The unfertilized eggs provide nutrition until the tadpoles metamorphose into froglets. This unique reproductive strategy results in fewer froglets per brood compared to other amphibians.

Invasive species and climate change add pressure to the species’ recovery.

What the 2026 Mountain Chicken Population Looks Like

Today, the mountain chicken remains fragile. A small wild population persists on Dominica, while the species is extinct in the wild on Montserrat. It remains classified as 'critically endangered' by the IUCN.

Conservation teams monitor populations closely, tracking disease, breeding success, and habitat quality. Captive breeding and reintroduction aim to rebuild healthy populations resilient to future outbreaks.

The story of this giant ditch frog illustrates how amphibians serve as early warning systems for ecosystem health. Protecting it gives the mountain chicken a fighting chance for long‑term survival.

This article was created with AI technology and then fact‑checked and edited by a HowStuffWorks editor.