English and Scientific names: |
Red-throated Loon (Gavia stellata)
|
Number of individuals: |
1
adult in definitive basic plumage |
Locality: LOUISIANA: |
Jackson |
Specific Locality: |
Caney
Creek Reservoir, Womack, ca. 5.5 mi. SSW of Chatham (32.2257 N, -92.4904 W) |
Date(s) when observed: |
24
January 2009 |
Time(s) of day when
observed: |
9:20 AM – 3:30 PM CST |
Reporting observer and address: |
Justin Bosler Baton Rouge, LA |
Other observers accompanying reporter who
also identified the bird(s): |
Devin
Bosler |
Other
observers who independently identified the bird(s): |
Charles Lyon and Terry Davis after 2 PM on
24 Jan. Paul Conover, Mac Myers, Marty Guidry, and m.ob. on subsequent dates. |
Light
conditions (position of bird in relation to shade and to direction and amount
of light): |
Overcast w/ low ceiling and generally fair
to poor light conditions. |
Optical equipment: |
Zeiss Victory FL 8x42 binocular (good
condition) and Kowa Prominar TSN-4 77mm spotting scope w/ 20-60x zoom eyepiece
(good condition) |
Distance to
bird(s): |
from ca. 150 to 500 meters |
Duration of
observation: |
on and off over period of 6 hrs. |
Habitat: |
Relatively deep, freshwater man made lake
in upland mixed pine-hardwood forest.
One of the deepest lakes in LA, reaching depths of 60 ft. in three
locations. |
Behavior of bird/birder: |
The loon was initially spotted as it
surfaced amid an aggregation of ~20 Common Loons (COLO) out ca. 200-250 m from
the dam. Devin and I had scoped
through all of the COLO at least 2-3x before picking up on this bird. We soon found out why it had eluded us on
the first few passes. It was diving
frequently and staying submerged for longer than it surfaced. Some dives lasting as long as 2+ mins. It covered distances underwater quicker
than COLO. A combination of these
factors coupled w/ the lousy (gusty wind and light rain) weather conditions
made documenting this loon exceedingly difficult. It took flight briefly, but landed after 50 m or so on the
outside of a tightly packed fishing party of Double-crested Cormorants (DCCO)
where it continued to fish. Now, it
was as close to the public boat ramp as it ever got throughout the day, but
soon worked its way back closer to the middle of the SE end of the lake. It lingered very close to the half-way
point between N and S shores (as viewed from Pine Bluff Estates on N shore)
for the remainder of the AM and into the PM.
We had prolonged views of it above water in the PM as it spent more
time preening and resting than diving. |
Description: |
A small, slender loon patterned dark above
and light below. Silvery-gray upperparts
contrasted sharply against the pure white underparts on the sides of the breast,
neck, and head. Some pale fringing
noticeable on back feathers. Relatively
small, dark bill was remarkably thin and slightly upturned. Dark, beady eyes isolated on clean white
face. Very low-to-water profile w/
slim chest and neck. |
Voice: |
Not
heard. A few COLO yodeling in AM. |
Similar
species: |
All other loons can be eliminated by overall
small size and delicate structure, dark beady eye isolated on clean white
face, and small, thin, upturned bill. |
Photographs
or tape recordings obtained? |
Yes, digivideo obtained by Justin Bosler,
and attached. |
Previous
experience with this species: |
Extensive experience w/ RTLO along Atlantic
coast in the Northeast from ME to NJ. |
Identification aids: |
None |
This description is written from: |
notes made during the observation and
memory. |
Are
you positive of your identification? If not, explain: |
Yes, 100% positive. |
Reporter: |
Justin
Bosler
|
Date and time: |
28 January 2009 9:30 PM CST |