Until recently the Costa Rican Swift was generally regarded as a subspecies of the geographically much more widespread Band-rumped Swift (Chaetura spinicauda). However, in comparison to most other races of the latter, the present species has a much more extensive and darker rump band (rather than a narrow white patch), as well as having an obvious pale throat patch. Costa Rican Swift occurs from northern Colombia north to Costa Rica, and is generally rather poorly known, in large part through having been lumped with Band-rumped Swift for so long. To date nothing is known concerning breeding behavior. Like the Band-rumped Swift, Costa Rican Swift probably regularly associates with other swift species while feeding, often high above the ground except early and late in the day.