For my #Age-of-Avians
The Hoabbon (A mix of the name Hoatzin and Gibbon) is a descendent of the Hoatzin. Due to either evolution or devolution, the hoatzin retained its claws even in adulthood, given up flight and took on a lifestyle similar to that of a gibbon. The Hoabbon fills the niches of arboreal primates or tree sloths. Hoabbons have even evolved a gibbon-like intellect.