 Table II a - Page 6
Airport in Calhoun, Georgia; September 29, 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 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
No migratory activity was seen at 7:00 or at 8:23 in open area next
to the motel in Calhoun. One D. plexippus was seen at 8:30 during the drive to the
airport. Weather report indicated an approaching front. |
Start |
- |
8:38 |
- |
- |
- |
- |
- |
- |
143° |
3 m/s |
22.5°C |
- |
strato-
cumulus |
I had set up for observations at the Calhoun airport. |
36 |
D. plexippus |
8:57 |
2 m |
flap |
straight |
level |
265° |
left |
152° |
1.8 m/s |
- |
yes |
- |
Butterfly stayed at an altitdue of 2 m until it neared trees, then
flew up and over. Strong winds aloft were indicated by clouds drifting quickly
across the sky from a S by W bearing. |
37 |
D. plexippus |
9:02 |
30 m |
soar |
circle,
straight |
level |
307° |
left |
145° |
3.6 m/s |
22.5°C |
yes |
fracto-
cumulus |
Cloud layer appeared to be very low (i.e. a
low ceiling). |
38 |
D. plexippus |
9:11 |
12 m |
glide |
straight |
descend |
294° |
237° |
155° |
3.1 m/s |
- |
- |
- |
Butterfly started at 12 m and glided down to 10 m. Cloudbase
was about 150 m. |
39 |
D. plexippus |
9:17 |
12 m |
flap,
soar |
straight,
(circle),
straight |
climb,
level |
306° |
235° |
143° |
2.7 m/s |
- |
yes |
- |
Butterfly started at 10 m, flapped up to 12 m, soared in circles
briefly, then soared straight. Two more D. plexippus were also seen - one
lower, and one higher. Swifts were foraging. |