Vaux’s swift (Chaetura vauxi) and chimney swift (Chaetura pelagica) are two closely related species of swifts that breed in North America. While they are very similar in […]
Vaux’s swift (Chaetura vauxi) and chimney swift (Chaetura pelagica) are two closely related species of swifts that breed in North America. While they are very similar in […]