The Allen’s hummingbird and the Anna’s hummingbird (Selasphorus sasin and Selasphorus anna, respectively) are two closely related species of hummingbirds that can be difficult to tell apart. These two species of hummingbirds are very similar in appearance, but there are a few key differences that can help you identify them.
One of the most noticeable differences between the two species is their range. Allen’s hummingbirds are found in the Pacific Northwest, while Anna’s hummingbirds are found in the southwestern United States and Mexico. Additionally, Anna’s hummingbirds have a slightly longer bill than Allen’s hummingbirds.
