Associations between social insects, such as wasps and bees, and birds are a common strategy related to nest protection. Several examples exist in the literature of bird–wasp interactions, many in the Neotropics, but some bird families, including swifts (Apodidae), lack information regarding this kind of association. This work reports 2 cases of Neotropical swift species nesting adjacent to wasp nests in southeastern Brazil: the Sooty Swift (