What are the cactus wrens ancestors?

Cactus wrens (Campylorhynchus brunneicapillus) are part of the family Troglodytidae, which includes wrens and their relatives. Their ancestors are believed to have evolved from small, insectivorous birds that occupied various environments in North America. Fossil evidence and genetic studies suggest that wrens diversified in response to changing habitats and climate over millions of years, leading to the adaptation of species like the cactus wren to arid desert environments.