 Table V b - Page 40
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 |
Break |
- |
8:47 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
228 |
D. plexippus |
8:50 |
15 m |
flap,
soar,
flap |
straight |
level |
282° |
left |
170° |
1.6 m/s |
13.5°C |
yes |
- |
Butterfly soared straight across an area of lift ( thermal
beginning to lift off?). A second D. plexippus, presumably a forager, was
seen flying upwind at 1 m. |
229 |
D. plexippus |
9:13 |
15 m |
flap,
glide |
straight |
descend |
W |
233° |
159° |
1.7 m/s |
- |
- |
- |
Butterfly flapped, then glided, down to 1 m and landed on
vegetation. Another foraging D. plexippus was seen flying on a 152° bearing
(upwind) at 1 - 2 m. High scans with binoculars were not productive. |
230 |
D. plexippus |
9:32 |
20 m |
soar,
glide |
straight,
circle,
descend |
level,
climb,
descend |
273° |
248° |
175° |
0.5 m/s |
- |
yes |
- |
Butterfly soared across an area of lift, then began to circle and
ascended nearly vertically. It then left the thermal and glided back down. Two
more D. plexippus were seen: a high-flying migrant and a low flying forager
(presumed). |
231 |
D. plexippus |
9:40 |
15 m |
flap,
soar |
straight,
circle,
straight |
climb,
level |
273° |
left |
168° |
1.8 m/s |
16.5°C |
yes |
- |
Butterfly started at 6 m, climbed to a thermal, circled a few
times, then began soaring in a straight line. Another D. plexippus was seen
flying at 2 m. High scans with binoculars were not productive. |