English
and Scientific names: |
Cave Swallow
(Petrochelidon
fulva)
|
Number
of individuals: |
3; 1 apparent juvenile, 2 adults |
Locality:
LOUISIANA: |
Vermilion |
Specific
Locality: |
Ca. 2.5 miles S of Lake Arthur |
Date(s)
when observed: |
7/19/2009 |
Time(s)
of day when observed: |
About 9 AM |
Reporting
observer and address: |
Paul Conover |
Other observers
accompanying reporter who also identified the bird(s): |
|
Other observers who
independently identified the bird(s) |
|
Light conditions
(position of bird in relation to shade and to direction and amount of light): |
Good light, early morning sun behind me, birds
facing into light. |
Optical
equipment: |
Zeiss 10s, Nikon Fieldscope III 20-60 zoom, Sony
60X optical zoom videocam. |
Distance
to bird(s): |
40 yards? Birds were across the highway on a
powerline. |
Duration
of observation: |
About 20 minutes |
Habitat:
|
Highway powerlines near farm pond in pastureland. |
Behavior
of bird: |
Birds perched for periods, and circled pond when
feeding. |
Description: |
Three swallows with “square” tails. The bird that
I assume was a juvenile had the basic Cave Swallow pattern of dark blue back,
buffy rump, white underparts. It differed from typical adult Caves in having a
buffy-whitish throat, a muted buffy hind collar, and a broad dingy band
across the breast. The other two birds were typical Caves, with buffy
throats that wrapped around the hind collar to isolate the dark caps, which
were dark in back, rufous in front. Backs were blue with buffy rumps, wings
dark, matching mantle. Beyond those basics, I didn’t notice anything special.
I was more interested in the assumed juvenile. It is tempting to think these birds were a family
group of local breeding stock. A group of 4 birds I had about 10 miles to the
E and about 6 hours later and which were possibly the same birds (but
doubtful) had at least 1 juvenile and 1 probable juvenile with 2 adults. |
Voice: |
Not noted. |
Similar species: |
Cliff juveniles without buffy on throat, Barns by
structure and pattern. Adults with diagnostic buffy throat and capped look. |
Photographs or tape
recordings obtained? |
Video. |
Previous experience with
this species: |
Pretty extensive. Quite a few sightings in LA, a
few in TX over the years. |
Identification
aids: |
|
This
description is written from: |
Memory, video. |
Are you positive of your
identification? If not, explain: |
Yes. |
Date
and time: |
November 5, 2009 |