 Table XII h - Page 97
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 |
438 |
D. plexippus |
3:31 |
4 m |
glide,
flap |
straight |
descend,
level |
264° |
- |
097° |
2.7 m/s |
- |
yes |
- |
Butterfly started at 4 m, glided down to 0.5 m, and
started flapping. A P. sennae was seen. Swifts were foraging overhead.
No D. plexippus were seen foraging during a check of flowers. |
439 |
D. plexippus |
3:36 |
100 m |
flap,
soar |
straight,
circle |
climb |
273° |
- |
- |
- |
- |
yes |
- |
Butterfly started at 3 m, flapped up and encountered a
thermal, it circled and soared and climbed to 100 m. The D. plexippus passed
through a huge flock of foraging swifts during it's soaring climb and was ignored. |
440 |
D. plexippus |
3:37 |
- |
glide |
straight |
descend |
225° |
- |
173° |
2.0 m/s |
- |
yes |
- |
I missed altitude data. The thermal had drifted
too far downwind for detailed inspection but swifts could still be seen foraging in its
lower section. |
441 |
D. plexippus |
3:40 |
60 m |
flap,
soar,
glide |
straight,
circle,
straight |
climb,
descend,
climb |
296° |
- |
157° |
2.0 m/s |
- |
yes |
- |
Butterfly started at 10 m, flapped upward and found a
thermal. The migrant gained altitude while soaring in circles, then left the thermal
and glided down to another thermal where it circled and soared up to 60 m. A swift
was seen foraging. |