 Table XI d - Page 86
Airport in Calhoun, Georgia; October 8, 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 |
393 |
D. plexippus |
12:40 |
15 m |
glide
flap,
soar |
straight,
circle |
level,
climb |
184° |
254° |
360° |
3.8 m/s |
- |
yes |
- |
Butterfly glided down to 7 m, then flapped up to a thermal, circled
and soared, then soared straight, found stronger lift (core?) and began circling again,
and climbed to 15 m. |
394 |
Vanessa
atalanta |
12:47 |
15 m |
flap |
straight |
climb |
220° |
250° |
002° |
2.7 m/s |
- |
- |
- |
Butterfly started at 10 m and climbed straight ahead. |
395 |
D. plexippus |
12:50 |
- |
flap |
- |
- |
SW |
right |
- |
- |
- |
- |
clear |
I lost sight of the butterfly against the glare of the sky. |
396 |
V. atalanta |
12:56 |
1 m |
flap |
straight |
level |
255° |
- |
350° |
2.0 m/s |
- |
yes |
- |
Vulture was soaring at 25 m. |
Break |
- |
1:00 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
Resume |
- |
1:05 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
397 |
D. plexippus |
1:09 |
30 m |
flap,
soar |
straight,
circle |
climb |
S |
(right) |
350° |
1.3 m/s |
16.5°C |
yes |
- |
Butterfly was flapping along at 10 m, when it encountered a thermal
and began to soar in circles, climbing to 30 m. I lost sight of it against the glare
of sky. |
- |
- |
1:23 |
- |
- |
- |
- |
- |
- |
- |
- |
17.5°C |
- |
- |
John Westbrook reported seeing 2 V. atalanta and that both
were flying West. |
- |
- |
1:30 |
- |
- |
- |
- |
- |
- |
- |
- |
17.5°C |
yes |
- |
Swifts were foraging. The air sonde measured ambient
temperatures of 10°C at 300 m, 9°C at 900 m, and 3°C at 1200 m. |