 Table IX g - Page 67
Airport in Calhoun, Georgia; October 6, 1987;
(Magnetic Declination = 2°W: Subtract 2° for True Bearing, True
Heading and True Wind Direction) |
Num. |
Species |
Time |
Flight Behavior |
Weather |
Field Notes |
I |
II |
III |
IV |
Va |
Vb |
Part 1 |
Part 2 |
Part 3 |
Est.
Alt. |
Type
of Flt. |
Horiz.
Flt. |
Vert.
Flt. |
Mag.
Bear. |
Mag.
Head. |
Wind
Dir. |
Wind
Vel. |
Amb.
Temp |
Thrm.
Act. |
Cloud
Types |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
WW: Butterfly-like targets appeared at 4:13. Their body
alignment was 170° and they were most abundant at 180 m. Abundance had declined by
400 m, but some were as high as 900 m. |
325 |
D. plexippus |
4:18 |
30 m |
glide,
soar |
straight,
circle |
descend,
climb |
107° |
- |
278° |
- |
- |
yes |
- |
Butterfly was gliding down when it encountered a thermal at 10 m,
began to soar in circles and rapidly gained altitude. |
326 |
D. plexippus |
4:21 |
7 m |
flap,
soar,
glide |
straight,
circle,
straight |
level,
climb |
132° |
right |
248° |
1.6 m/s |
- |
yes |
- |
Missed starting altitude. Butterfly was flapping along when
it encountered a thermal, began to circle and soared to 7 m, then glided back down to 1 m
and resumed flapping. |
327 |
D. plexippus |
4:21 |
- |
soar |
straight |
level |
113° |
- |
248° |
1.6 m/s |
- |
yes |
- |
John Westbrook made the observation while I was watching # 326. |
- |
- |
4:27 |
- |
- |
- |
- |
- |
- |
268° |
2.0 m/s |
23.5°C |
yes |
- |
Convection activity was decreasing. WW: Radar showed
that a pulse of targets was approaching. None were observed through the binoculars.
|
Resume |
- |
5:00 |
- |
- |
- |
- |
- |
- |
280° |
5.1 m/s |
22.0°C |
yes |
- |
Convection was decreasing. |