Kauaʻi record · kba_bird_hawaiian_duck
Hawaiian Duck
Anas wyvilliana
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About Hawaiian Duck
Hawaiian Duck (Anas wyvilliana) is recorded as a native resident on Kauaʻi in the Bishop Museum's 2017 island checklist. This is a documented island occurrence, not a claim of an individual sighting in 2026.
Kauaʻi evidence
Bishop Museum island checklist (version 2, 2017) lists Kauaʻi status R: native resident. See original island table. The record includes Kauaʻi-specific or clearly defined regional evidence appropriate to its stated occurrence status.
Occurrence evidence
bishop_island_checklist_2017
Names and classification
- Scientific name
- Anas wyvilliana
- Common names
- Hawaiian Duck
- Family
- Anatidae
- Order
- Anseriformes
- Record type
- Species
Kauaʻi occurrence and status
- Kauaʻi occurrence
- Kauaʻi documented: native resident (2017 island checklist)
- Origin
- Endemic
- Conservation status
- Not assessed
- Evidence date
- 2026-09-13
- Evidence limits
- Island occurrence supported by the 2017 checklist; abundance and current year presence are not established here
Habitat and ecology
- Habitats
- Montane forest · Forest · Wetlands · Marshes · Taro fields · Ponds · Streams
- Food and resource needs
- Snails, dragonfly larvae, earthworms, grass seeds, green algae, and wetland plant seeds/leaves.
- Reproduction
- Suitable nesting or roosting sites, seasonal food, and protection from disturbance and predators.
- Shelter
- Shelter and structure within montane forest, forest, wetlands.
Threats and conservation
- Threats
- Mallard hybridization, habitat loss/degradation, altered hydrology, invasive plants, predators, nonnative fish, botulism, avian flu, and wetland contaminants
- Conservation actions
- Protect Kauai/Niihau genetic stronghold, maintain Hanalei/Huleia wetland quality, control mallard introgression, manage hydrology and predators, and continue disease surveillance
- Monitoring
- Track occurrence, abundance, habitat condition, breeding or seasonal use, and significant threats.
- Data gaps
- Update island status with dated contemporary records · Specific Kauaʻi habitat and abundance need local evidence
Process and seasonal context
- Seasonal timing
- Resident Endangered Species Year Round With January May Peak Activity
- Seasonal description
- Hawaiian Duck (Anas wyvilliana) is recorded as a native resident on Kauaʻi in the Bishop Museum's 2017 island checklist. This is a documented island occurrence, not a claim of an individual sighting in 2026.