Eleutherodactylus nortoni

Eleutherodactylus nortoni, commonly known as Norton's coqui, is a small direct-developing frog endemic to Puerto Rico. This species belongs to the diverse genus Eleutherodactylus, characterized by their lack of a free-swimming tadpole stage, with eggs developing directly into miniature frogs. Norton's coqui inhabits montane forests in the central mountainous regions of Puerto Rico, where it occupies the forest floor and low vegetation layers.

The species has experienced severe population declines and range contractions, leading to its classification as Critically Endangered by the IUCN. Primary threats include habitat loss and fragmentation due to deforestation, agricultural expansion, and urban development in Puerto Rico's mountainous areas. Climate change poses additional risks through altered precipitation patterns and temperature increases that affect the species' moisture-dependent reproduction and survival.

The fungal disease chytridiomycosis, which has devastated amphibian populations globally, represents another significant threat to remaining populations. Conservation efforts focus on habitat protection within existing protected areas and monitoring of known populations to track population trends. Research initiatives aim to better understand the species' ecological requirements and assess the impact of various threats.

The Puerto Rico Department of Natural and Environmental Resources, along with academic institutions, conducts periodic surveys to locate surviving populations and evaluate habitat quality. Recovery efforts emphasize the importance of maintaining forest connectivity and implementing sustainable land management practices in the species' remaining range to prevent further population declines.

This species inhabits montane forests in Puerto Rico's central mountains, occupying forest floor leaf litter and low vegetation layers. It requires moist microhabitats typical of tropical montane forest ecosystems for reproduction and survival.