Calayan Rail
Gallirallus calayanensis
The Calayan rail is a flightless bird of the rail, moorhen, and coot family (Rallidae) that inhabits Calayan Island in the Philippines. Though well known to natives of the island as the "piding", it was first observed by ornithologist Carmela Española in May 2004 and the discovery was officially announced on August 16, 2004.
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Calayan_rail
Taxonomy & Classification
Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Gruiformes
Family
Rallidae
Genus
Gallirallus
Calayan Rail belongs to the family Rallidae, order Gruiformes, within the Aves class.
Species Profile
The Calayan rail is a flightless bird of the rail, moorhen, and coot family (Rallidae) that inhabits Calayan Island in the Philippines. Though well known to natives of the island as the "piding", it was first observed by ornithologist Carmela Española in May 2004 and the discovery was officially announced on August 16, 2004. It was formerly the only species placed in the genus Aptenorallus.
The Calayan Rail faces significant threats due to its extremely restricted range, being endemic to a single small island in the Philippines. Habitat degradation from human activities, introduced predators, and the species' naturally small population size make it particularly vulnerable to extinction. Its limited distribution means that any local threats could impact the entire global population.
Key Facts
Habitat & Distribution
Inhabits dense grasslands, scrublands, and forest edges on Calayan Island in the northern Philippines. The species occupies both coastal areas and inland habitats with thick vegetation cover that provides shelter and foraging opportunities.
Threats
Extremely restricted range (single island endemic)
Habitat degradation and loss
Introduced predators (cats, rats)
Small population size
Human disturbance and development
Community Sightings
Report a sightingNo community sightings yet. Be the first to report!
Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Calayan Rail (Gallirallus calayanensis). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/calayan-rail