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Table IV d - Page 36 Airport in Calhoun, Georgia; October 1, 1987; (Magnetic Declination = 2°W: Subtract 2° for True Bearing, True Heading and True Wind Direction) |
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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 |
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215 | unknown black swallowtail |
2:41 | 30 m | flap, (soar) |
straight, circle |
level | 197° | 235° | 008° | 2.2 m/s | - | yes | - | A B. philenor mimic - could have been a Papilio glaucus (dark form of female Tiger Swallowtail), a Papilio troilus (Spicebush Swallowtail), or a Papilio polyxenes Eastern Black Swallowtail. It flapped with a light, fluttering, wingbeat. The unknown butterfly used a mix of fluttering flight and normal soaring flight. Its circles appeared smaller in diameter than those of monarch butterflies. |
216 | P. sennae | 2:53 | 10 m | flap | straight | level, climb |
153° | right | 334° | 2.7 m/s | - | yes | - | Butterfly climbed to clear an airport hanger. A J coenia, a P. sennae, and a low-flying D. plexippus, were also seen. Vultures were soaring at 30 m. |
217 | D. plexippus | 3:02 | 25 m | flap, soar |
straight, circle |
climb, level |
188° | - | 010° | 2.2 m/s | - | yes | - | Butterfly started at 3 m, flapped up to a thermal and began soaring in circles and drifting downwind while remaining at the same altitude. A vulture was soaring. |
- | - | 3:04 | - | - | - | - | - | - | - | - | 23.5°C | - | - | J. coenia and P. sennae were evident. |
218 | D. plexippus | 3:08 | 30 m | flap, soar |
straight, variable |
climb | 236° | - | 007° | 2.9 m/s | - | yes | - | Butterfly flapped up to thermal and began soaring but appeared to have difficulty centering in lift. Swifts were foraging. |