 Table VIII b - Page 52
Airport in Calhoun, Georgia; October 5, 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 |
- |
- |
9:34 |
- |
- |
- |
- |
- |
- |
194° |
1.0 m/s |
16.0°C |
- |
- |
- |
272 |
D. plexippus |
- |
60 m |
soar,
glide |
circle,
straight |
climb,
level
descend |
224° |
left |
calm |
- |
- |
yes |
- |
Butterfly started at 6 m, circled up to 60 m, soared straight for
awhile, then glided down over a tree to 20 m. A second D. plexippus was also
in the thermal. |
273 |
D. plexippus |
10:05 |
160 m |
soar |
circle |
climb |
229° |
- |
049° |
1.0 m/s |
- |
yes |
- |
I lost sight of the butterfly as it rapidity gained altitude while
circling and soaring. |
274 |
D. plexippus |
10:14 |
100 m |
flap,
soar,
glide |
straight,
circle,
glide |
level,
climb,
descend |
215° |
- |
187° |
0.2 m/s |
- |
yes |
- |
Butterfly was flapping at 4 m when in encountered a thermal
switched to circling and soaring. It rapidly gained altitude but stopped circling at 100 m
and began gliding down. Several other D. plexippus had a similar flight.
The butterflies would fly by low, then start soaring in circles in thermals
generated by the runway, then brake off circling at about 100 m and start gliding back
down. |
275 |
D. plexippus |
10:17 |
3 m |
flap |
straight |
level,
climb |
226° |
- |
- |
- |
- |
- |
- |
Butterfly started at 1 m and began to climb as it approached the
trees. Two more D. plexippus were seen, another one flying low and one that
was foraging. |