Taxonomy
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Bird
- Family
- Rallidae
- Genus
- Gallinula
- Species
- galeata sandvicensis
Habitat
This subspecies primarily inhabits freshwater wetlands, marshes, and ponds on the Hawaiian Islands, often in areas with dense emergent vegetation. It prefers lowland regions with shallow water bodies and is adaptable to both natural and human-altered environments like reservoirs.
Diet
The Hawaiian common gallinule feeds on a variety of items including aquatic plants, seeds, insects, snails, and small fish. It forages by dabbling in shallow water or probing vegetation, typically during the early morning or late evening.
Behavior
These birds are secretive and often hide in dense vegetation, emerging to swim or walk on water plants with quick, jerky movements. They form small social groups outside of breeding season but become territorial around nests, communicating with loud calls and alarm notes. They are most active at dawn and dusk, showing cautious behavior around potential threats.
Conservation Status
The IUCN classifies the Hawaiian common gallinule as Endangered due to habitat loss from development and predation by introduced species. Population trends are declining rapidly, with major threats including wetland drainage and invasive predators.