Moho braccatus, also known as the Kaua'i 'ō'ō, was a small black bird with a striking yellow underbelly and unique voice, native to the Hawaiian island of Kaua'i. This species inhabited moist, montane forests and was known for its role in pollination, but is sadly now extinct.

Moho braccatus, commonly known as the Kauaʻi ʻōʻō, was native to the Hawaiian Islands, specifically the island of Kauaʻi. This species was endemic to this region, meaning it was found nowhere else in the world.

The Kauaʻi ʻōʻō inhabited dense, wet montane forests on the island of Kauaʻi. These forests were characterized by high rainfall, humidity, and a rich diversity of plant species. The environment was typically cool and misty due to the elevation and frequent cloud cover.

The Kauaʻi ʻōʻō was a nectarivorous bird, meaning its primary diet consisted of nectar from native flowers, such as those of the ʻōhiʻa lehua tree. The species played a crucial role in pollination within its ecosystem. It also consumed insects, which provided additional protein. The bird's ecological niche was closely tied to the native flora, and its decline was largely due to habitat destruction and the introduction of non-native species.