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left arrowarrow leftTable XI d -  Page 86
Airport in Calhoun, Georgia;  October 8, 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 
393 D. plexippus 12:40 15 m glide
flap,
soar
straight,
circle
level,
climb
184° 254° 360° 3.8 m/s - yes - Butterfly glided down to 7 m, then flapped up to a thermal, circled and soared, then soared straight, found stronger lift (core?) and began circling again, and climbed to 15 m.
394

Vanessa atalanta

12:47 15 m flap straight climb 220° 250° 002° 2.7 m/s - - - Butterfly started at 10 m and climbed straight ahead.
395 D. plexippus 12:50 - flap - - SW right - - - - clear I lost sight of the butterfly against the glare of the sky.
396 V. atalanta 12:56 1 m flap straight level 255° - 350° 2.0 m/s - yes - Vulture was soaring at 25 m.
Break - 1:00 - - - - - - - - - - - -
Resume - 1:05 - - - - - - - - - - - -
397 D. plexippus 1:09 30 m flap,
soar
straight,
circle
climb S (right) 350° 1.3 m/s 16.5°C yes - Butterfly was flapping along at 10 m, when it encountered a thermal and began to soar in circles, climbing to 30 m.  I lost sight of it against the glare of sky.
- - 1:23 - - - - - - - - 17.5°C - - John Westbrook reported seeing 2 V. atalanta and that both were flying West.
- - 1:30 - - - - - - - - 17.5°C yes - Swifts were foraging.  The air sonde measured ambient temperatures of 10°C at 300 m, 9°C at 900 m, and 3°C at 1200 m.