 Table XII b - Page 91
Airport in Calhoun, Georgia; October 9, 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 |
Break |
- |
9:45 |
- |
- |
- |
- |
- |
- |
- |
- |
17.5° |
yes |
cumulus
puff |
WW: Radar was not detecting any targets. A
vulture was soaring at 30 m. The top of the inversion was 1400 m. The
temperature at the top was 7°C. |
Resume |
- |
9:49 |
- |
- |
- |
- |
- |
- |
132° |
3.8 m/s |
- |
yes |
- |
There were no D. plexippus foraging at flowers.
Swifts were foraging at 24 m. Heat waves (thermals) were visible. |
404 |
D. plexippus |
10:20 |
30 m |
soar |
straight |
level,
climb |
290° |
243° |
170° |
5.8 m/s |
18.5°C |
yes |
- |
Butterfly started at 25 m and climbed to 30 m while
soaring straight ahead. |
405 |
D. plexippus |
10:24 |
10 m |
glide |
straight,
turn |
descend |
285° |
226° |
170° |
4.5 m/s |
- |
- |
- |
Butterfly started at 10 m and glided down to 1 m.
It turned sharply as it approached the ground and began to forage. |
406 |
D. plexippus |
10:28 |
- |
flap |
straight |
descend |
- |
- |
- |
- |
- |
- |
- |
I saw the butterfly too late to record most of the
data. |
407 |
D. plexippus |
10:32 |
30 m |
soar,
glide |
circle,
straight |
level,
climb,
descend |
294° |
205° |
171° |
5.8 m/s |
- |
yes |
- |
Butterfly started at 30 m and circled and soared, but
without gaining additional altitude. It then soared straight, gained altitude, then
glided back down. Two more D. plexippus were seen in the thermal. WW:
Radar showed targets at approx. 100 m. |