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left arrowarrow leftTable V a  -  Page 39
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 
- - 7:30 - - - - - - - - 9.5°C no none There was no visible migratory activity at open area next to motel in Calhoun during approximately 5 minutes of scanning.
- - 8:00 - - - - - - - - 11.0°C no none Still no migratory activity .
- - 8:16 - - - - - - Calm - 11.5°C - - At Calhoun Airport.  Calm wind condition indicated that a nocturnal inversion was present.
224 D. plexippus 8:19 30 m flap - - W by S - 203° 0.6 m/s - no - I lost sight of the butterfly against glare of sky.  Light wind indicated that convection had started and that the inversion was breaking up.
225 D. plexippus 8:29 15 m flap,
soar,
flap
straight,
circle
level,
climb
227° 237° 170° 0.8 m/s - yes - Butterfly started at 12 m, soared straight across an area of lift (thermal bubble beginning to lift off?), then flapped upward in a large circle (searching for stronger lift?).
226 D. plexippus 8:36 15 m flap straight level 233° 220° 178° 1.5 m/s - No - Butterfly flapped straight towards a tree.  Swifts flapping - apparently there was no organized lift.
- - 8:38 - - - - - - - - 11.5°C - - -
227 D. plexippus 8:45 100 m flap straight climb 247° 228° 184° 1.0 m/s - - - Butterfly started at 60 m and climbed high enough to be illuminated from underside by the sun (climbing to top of inversion?).  Swifts were foraging.