Home ¦ Index to Field Studies ¦ Current Directory ¦ Tables: ¦ I a, I b ¦ II a ¦ III a ¦ IV a, IV b ¦
![]() ![]() University of Toronto at Mississauga, Mississauga, Ontario; September 16, 1998; Coordinates = 43°33'N, 79°40'W; Altitude = 152 m; Magnetic Declination = 10°W (Subtract 10° for True); Magnetic Inclination = 72.30°; Observer: David Gibo |
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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. Path |
Vert. Path |
Mag. Bear. |
Mag. Head. |
Wind Dir. |
Wind Vel. |
Amb. Temp. |
Thrm. Act. |
Cloud Types |
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Start | - | 9:44 | - | - | - | - | - | - | 120° | 18.0°C | yes | Clear | Variable winds indicate thermals. | |
1 | D. plexippus | 9:52 | 100 m | flap, soar |
straight | level | 242° | left | 128° | 18.0°C | yes | Clear | Butterfly was mainly soaring. No gulls of other birds. |
|
2 | D. plexippus | 10:00 | 100 m | flap, soar, glide |
straight, circle, straight |
level, climb, descend |
253° | 182° | 127° | 18.0°C | yes | Clear | Butterfly flew along, flapping weakly, encountered a thermal, circled and climbed, then left the thermal and glided. |
|
3 | D. plexippus |
10:07 | 150 m | flap, glide, soar |
straight, circle |
level, descend, climb |
296° | - | 141° | 18.5°C | yes | Clear | Butterfly was gliding down, with a few flaps, encountered a thermal and turned haphazardly as it soared and climbed. | |
4 |
D. plexippus |
10:14 | 150 m | soar | straight | level | 264° | 190° | 118° | 18.0°C | yes | Clear | Butterfly soared staight until it vanished. No birds in sky. | |
Quit |
- | 10:30 | - | - | - | - | - | - | 108° | 18.5°C | yes | Clear | Obvious thermal activity has started. A pair of sharp-shinned hawks are soaring. No monarch butterflies were seen during a check of goldenrod starting at 10:33 |