sentences:  This suggests that the English name may be a calque on the Swedish term.There are few taxonomic problems within the genus, but the red-chested swallow—a resident of West Africa, the Congo basin, and Ethiopia—was formerly treated as a subspecies of barn swallow.The red-chested swallow is slightly smaller than its migratory relative, has a narrower blue breast-band, and (in the adult) has shorter tail streamers.