English and Scientific
names: |
Smith’s Longspur (Calcarius pictus) |
Number of individuals: |
1 presumed female |
Locality: LOUISIANA: |
Caddo Parish |
Specific Locality: |
Shreveport
Regional Airport, Shreveport |
Date(s) when observed: |
12 January 2008 |
Time(s) of day when
observed: |
~10:00 AM CST |
Reporting observer and
address: |
Devin Bosler Baton Rouge, LA |
Other observers accompanying reporter who also
identified the bird(s): |
Justin Bosler, Terry Davis,
Charlie Lyon, Phred Benham |
Other observers accompanying reporter who
independently identified the bird(s): |
none |
Light conditions (position of bird in relation to
shade and to direction and amount of light): |
Clear sky w/
optimal late morning sunlight.
Sun angle relatively high and not a factor (behind the observers). |
Optical equipment: |
Zeiss Victory FL 8x42 (excellent condition) |
Distance to bird(s): |
ca. 20 meters when initially flushed |
Duration of observation: |
~3 min. |
Habitat: |
open, short grass
fields (primarily Aristida grass) |
Behavior of bird: |
The longspur was
only observed in flight after being flushed and continued on until dropping
down out of sight. |
Description: |
The longspur was
flushed and initially heard. A
dry, flat, ticking rattle was heard repeatedly during the encounter while the
bird was in flight. Once
flushed, the bird lifted off and flew west in characteristic deep, undulating
flight. In flight, the longspur
was entirely buffy below with a paler, largely unmarked throat and head. Also visible from below were the two
nearly entirely white outer rectrices on both sides of the tail. When the longspur first took flight,
the dusky auricular patch on the face contrasted with the pale
supercilium. Although reduced,
the white lesser wing coverts were apparent. |
Voice: |
A dry, flat rattle
delivered repeatedly in flight. |
Similar species: |
Other longspurs
can be eliminated by voice and tail pattern. Lapland Longspur (LALO) has a similar rattle but it tends
to be sharper than Smith’s Longspur (SMLO) and is usually interspersed with
‘teew’ notes. McCown’s Longspur
(MCLO) and Chestnut-collared Longspur (CCLO) have completely different call
notes and rattles. The extent of
buffiness on the underparts can also eliminate the other three
longspurs. MCLO and CCLO have
substantially more white in the tails, which is very noticeable in
flight. LALO has limited white
in the tail, confined to the outermost rectrix. |
Photographs or tape recordings obtained? |
Unfortunately, no. |
Previous experience with this species: |
Familiar with SMLO
from previous experience at this location on 29 January 2006 and from a
single individual in GA (1st state record) on 30 December 2007. |
Identification aids: |
at time of observation: none after observation: National Geographic Complete Birds of N.A. (Alderfer
et al. 2005) and Sibley's Guide to Birds (Sibley 2003). |
This description is
written from: |
notes made during the observation,
notes made after the observation, memory |
Are you positive of your identification? If not,
explain: |
Yes, very
confident. |
Reporter: |
Devin
Bosler
|
Date and time: |
10:00 PM CST |