Global Bird Index - IOC15.1
Oahu Nukupuu
English name：Oahu Nukupuu
Scientific name：Hemignathus lucidus
Kauai Nukupuu
English name：Kauai Nukupuu
Scientific name：Hemignathus hanapepe
Maui Nukupuu
English name：Maui Nukupuu
Scientific name：Hemignathus affinis
Akiapolaau
English name：Akiapolaau
Scientific name：Hemignathus wilsoni