Allen's Hummingbirds are distinguished from Rufous Hummingbirds mainly by the shapes of the tail feathers (narrower with smooth-margined R2 in Allen's, broader with notched R2 in Rufous). Though in-hand measurement during banding are the preferred means of confirming "female-plumaged" (female and juvenile male) Allen's east of California, clear photos of the fanned tail can often show the diagnostic characteristics. For additional identification help, please refer to A Field Guide to Hummingbirds of North America in the Peterson Field Guide Series. Note: Titles are provided by the photographers and may not be consistent with the field marks.
Nothing here yet.
You can save a photo or video to a gallery from its detail page, or choose from your faves here.