English and Scientific names: |
White-tailed Hawk
|
Number of individuals: |
1 bird in second year plumage |
Locality: |
Cameron |
Specific Locality: |
Ca. 5 miles W of Johnson’s Bayou, in the area of
the landfill. The bird was about 100
yards off the highway on the S side of the road on a fencepost. |
Date(s) when observed: |
10/10/2010 |
Time(s) of day when observed: |
10:00 AM |
Reporting observer and address: |
Paul Conover |
Other observers
accompanying reporter who also identified the bird(s): |
I called James Beck, who arrived at about 10:10 with
John Herbert, and Ronnie Spears. |
Other observers who
independently identified the bird(s) |
|
Light conditions
(position of bird in relation to shade and to direction and amount of light): |
Excellent lighting. Clear sky, sun was at a favorable
angle to the horizon and the bird. |
Optical equipment: |
zeiss
10s, nikon d50 w/200 mm lens, sony
camcorder. |
Distance to bird(s): |
ca. 100-150 yards. |
Duration of observation: |
30 minutes |
Habitat: |
Roadside pasture surrounded with barbed wire
fence. Pasture adjacent to landfill. |
Behavior of bird: |
Bird was perched on a fencepost at first. I
noticed it as I drove past and came back to photograph it. The bird spent a
lot of time preening. The morning had
been foggy, and a trace of the fog was lingering. The bird was probably damp from the
fog. After preening for a while, the
bird flew to a tree behind the fence.
A few minutes later, it made a dive for prey behind the tree, then flew back to the tree. We watched the bird from the highway. |
Description: |
A large dark hawk with a white blaze down the
chest. Head dark, appeared hooded. Mantle dark brown. Pale bases to nape feathers visible when
neck was stretched, but seemed dark when neck was compressed. Wings dark, but
pale brown bases of tertials visible through scope. Chestnut of lesser coverts visible as a slash
on mantle/wing juncture. Underparts with bright white ground color. Sides of neck dark brown, extending down to
vest of dark brown barring or mottling.
Central throat and upper breast clear white to top of vest, pale
extending thinly down center of vest.
Vent and undertail whitish. Tail from below seemed whitish or pale grayish,
with a vague dusky subterminal band. I was able to watch the bird preen its tail
through the scope with the dorsal surface facing me. It showed extremely fine,
evenly spaced dark barring along most of its length, against a white
background. The banding grew a bit
more concentrated near the tip to form a subterminal
band. Tips of rects had thin whitish edge forming a
thin terminal band. Legs bright yellow. Beak black tipped with pronounced hook at tip. Bluish
or grayish cere + bare facial skin back to level of
eye. Eye may have been simply catching the light, but
at times it had a bright brownish/reddish brown cast. Areas not seen well: rump, underwings.
|
Voice: |
not
noted. |
Similar species: |
The chestnut wing patch and pattern and color of
tail eliminate other dark hawks. |
Photographs or tape
recordings obtained? |
A handful of decent photos and some video which
should be of good quality. |
Previous experience with
this species: |
Long ago in TX, and a bit more recently in
LA. This is the fourth I’ve found and
sixth or so I’ve seen in LA. |
Identification aids: |
|
This description is written from: |
I drew sketches of the face, tail, and tertials
while watching the bird through the scope.
Otherwise, memory and pictures. |
Are you positive of your
identification? If not, explain: |
Yes. |
Date and time: |
10/12/2010 |