The Kauaʻi ʻakialoa (Akialoa stejnegeri) was a finch in the Fringillidae family. It was endemic to the island of Kauai, Hawaii. It became extinct due to introduced avian disease and habitat loss. The Kauaʻi ʻakialoa was about seven and a half inches in length and had a very long downcurved bill, which covered one third of its length. The adult males were bright olive-yellow on top and yellow on the bottom. The throat, breast, and sides of the body were olive-yellow. The females, however, were green-gray above and had a shorter bill.