The calliope hummingbird (Selasphorus calliope) and the broad-tailed hummingbird (Selasphorus platycercus) are two small, migratory birds that breed in western North America. Both species […]
The calliope hummingbird (Selasphorus calliope) and the broad-tailed hummingbird (Selasphorus platycercus) are two small, migratory birds that breed in western North America. Both species […]