Aythya affinis | lesser scaup
Regular Migrant
The migrant lesser scaup is a common winter visitor to the Hawaiʻi. This diving duck sifts through mud to feed on shellfish and underwater vegetation. It averages 15-19 inches in length and is just a little smaller than the similar looking greater scaup. Males have a dark head with a purple sheen on a white body and females are brown with a white forehead. Both have bluish bills.
The map below shows birding trails where you might see this bird. Learn more by visiting our species profile page for lesser scaup.
Hotspots for lesser scaup
- Māhā’ulepū Heritage Trail | Details for Māhā’ulepū Heritage Trail
- Betty Bliss Memorial Overlook | Details for Betty Bliss Memorial Overlook
- James Campbell National Wildlife Refuge | Details for James Campbell National Wildlife Refuge
- Keālia Pond National Wildlife Refuge | Details for Keālia Pond National Wildlife Refuge
- Kanahā Pond State Wildlife Sanctuary | Details for Kanahā Pond State Wildlife Sanctuary
- Kaloko-Honokōhau National Historic Park | Details for Kaloko-Honokōhau National Historic Park
- Wailoa River State Park | Details for Wailoa River State Park
- Loko Waka Pond | Details for Loko Waka Pond
Māhā’ulepū Heritage Trail
Coastal
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
Betty Bliss Memorial Overlook
Wetland
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Lookout Lookout](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/lookout.png)
![Interpretive Signage Interpretive Signage](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/signage.png)
James Campbell National Wildlife Refuge
Wetland
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
Keālia Pond National Wildlife Refuge
Wetland
![Kealia Pond National Wildlife Refuge](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/Kealia-300x180.jpg)
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Lookout Lookout](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/lookout.png)
![Bathroom Bathroom](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/restrooms.png)
![Interpretive Signage Interpretive Signage](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/signage.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
![Picnic area Picnic area](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/picnic.png)
![Ranger Station Ranger Station](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/ranger-station.png)
![Trash Trash](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/trash.png)
Kanahā Pond State Wildlife Sanctuary
Wetland
![Lookout Lookout](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/lookout.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
Kaloko-Honokōhau National Historic Park
Wetland
![](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/Kaloko-Honokohau-NHP-300x180.jpg)
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Bathroom Bathroom](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/restrooms.png)
![Interpretive Signage Interpretive Signage](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/signage.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
![Picnic area Picnic area](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/picnic.png)
![Ranger Station Ranger Station](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/ranger-station.png)
![Trash Trash](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/trash.png)
Wailoa River State Park
Wetland
![](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/Wailoa-1-300x180.jpg)
![Hiking Hiking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/hiking.png)
![Lookout Lookout](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/lookout.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
![Picnic area Picnic area](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/picnic.png)
![Trash Trash](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/trash.png)
Loko Waka Pond
Wetland
![](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/Lokowaka-300x180.jpg)
![Lookout Lookout](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/lookout.png)
![Bathroom Bathroom](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/restrooms.png)
![Parking Parking](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/parking2.png)
![Picnic area Picnic area](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/picnic.png)
![Trash Trash](https://hawaiibirdingtrails.hawaii.gov/wp-content/uploads/trash.png)