 Table V a - Page 39
Airport in Calhoun, Georgia; October 2, 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 |
- |
- |
7:30 |
- |
- |
- |
- |
- |
- |
- |
- |
9.5°C |
no |
none |
There was no visible migratory activity at open area next to motel
in Calhoun during approximately 5 minutes of scanning. |
- |
- |
8:00 |
- |
- |
- |
- |
- |
- |
- |
- |
11.0°C |
no |
none |
Still no migratory activity . |
- |
- |
8:16 |
- |
- |
- |
- |
- |
- |
Calm |
- |
11.5°C |
- |
- |
At Calhoun Airport. Calm wind condition indicated that a
nocturnal inversion was present. |
224 |
D. plexippus |
8:19 |
30 m |
flap |
- |
- |
W by S |
- |
203° |
0.6 m/s |
- |
no |
- |
I lost sight of the butterfly against glare of sky. Light
wind indicated that convection had started and that the inversion was breaking up. |
225 |
D. plexippus |
8:29 |
15 m |
flap,
soar,
flap |
straight,
circle |
level,
climb |
227° |
237° |
170° |
0.8 m/s |
- |
yes |
- |
Butterfly started at 12 m, soared straight across an area of lift
(thermal bubble beginning to lift off?), then flapped upward in a large circle (searching
for stronger lift?). |
226 |
D. plexippus |
8:36 |
15 m |
flap |
straight |
level |
233° |
220° |
178° |
1.5 m/s |
- |
No |
- |
Butterfly flapped straight towards a tree. Swifts flapping -
apparently there was no organized lift. |
- |
- |
8:38 |
- |
- |
- |
- |
- |
- |
- |
- |
11.5°C |
- |
- |
- |
227 |
D. plexippus |
8:45 |
100 m |
flap |
straight |
climb |
247° |
228° |
184° |
1.0 m/s |
- |
- |
- |
Butterfly started at 60 m and climbed high enough to be illuminated
from underside by the sun (climbing to top of inversion?). Swifts were foraging. |