Genus Pipile refers to a group of birds that are commonly known as chachalacas. These birds are native to the Americas, and they are members of the family Cracidae. While there are no specific synonyms for the genus Pipile itself, there are several ways to refer to these unique birds, depending on their particular species. For instance, the grey-headed chachalaca is known as Ortalis cinereiceps, while the speckled chachalaca is known as Ortalis guttata. Additionally, the golden-bellied chachalaca is known as Ortalis wagleri. Collectively, these birds are known for their loud, raucous calls and distinctive physical characteristics.