Male Rufous Hummingbird, Boulder County, Colorado, 7/07. |
|
|
Male Rufous Hummingbird with fairly extensive green in its back,
Ramsey Canyon, Arizona, 8/06. |
|
Female Rufous Hummingbird, Chaffee County, Colorado, 8/05. |
|
Adult female Rufous Hummingbird, Clear Creek County, Colorado, 7/05. |
|
Male Rufous Hummingbird, Durango, Colorado, 7/05. |
|
Male Rufous Hummingbird, Durango, Colorado, 7/05. |
|
Female Rufous Hummingbird, Durango, Colorado, 7/05. |
|
Female Rufous Hummingbirds, Durango, Colorado, 7/05. |
|
Immature male Rufous Hummingbird, Longmont, Colorado, 8/04. |
|
Immature male Rufous/Allen's Hummingbird, Beatty's Orchard, Miller
Canyon, Arizona, 7/03. |
|
Adult female Rufous Hummingbird, Longmont, Colorado, 8/03. Note
the flower stamens of the agastache (hummingbird mint) that are strategically
positioned to exchange pollen on the bird's forehead. |
| |
Adult female Rufous Hummingbird, Longmont, Colorado, 8/03. Here
you can see the pale agastache pollen on the forehead of the bird. |
|
Male Rufous Hummingbird in flight, Patton's Place, Patagonia, Arizona,
3/03. |
| |
Adult male Rufous Hummingbird, Steamboat Springs, Routt
County, Colorado, 7/02. Note the neon orange gorget (throat) when the
angle and light is right. |
| |
Adult male Rufous Hummingbird, Steamboat Springs, Routt
County, Colorado, 7/02. Slightly different angle yields slightly different
gorget color. |
| |
Adult male Rufous Hummingbird, Steamboat Springs, Routt
County, Colorado. Note how central portion of gorget looks greenish.
At some angles the whole throat goes dark. |
| |
Adult female Rufous Hummingbird, Copper Mountain, Summit
County, Colorado. Note spot on throat (this can flash brightly at some
angles) and wing tips that almost reach tip of tail. |
| |
Another view of the adult female Rufous Hummingbird,
Copper Mountain, Summit County, Colorado, 7/02. |
| |
I think this is an immature female Rufous Hummingbird
because the central throat spot has just begun to form. Other marks
resemble the adult female pictured above. Copper Mountain, Summit County,
Colorado, 7/02. |
| |
Another view of the same immature female Rufous Hummingbird
showing the diagnostic tail pattern. The tail is often flashed aggressively,
giving the opportunity to observe this in the field without photographic
equipment. In photos, however, you can observe the diagnostic asymmetrical
shape of the fourth tail feather (rectrice) from the edge. Note the
notch on the inner side. In the nearly identical Allen's Hummingbird,
this feather would lack this notch, having a symmetrical, sharp shape
instead. The last rectrice of the female Rufous Hummingbird is also
substantially broader than would be found in the Allen's. Copper Mountain,
Summit County, Colorado, 7/02. |
