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left arrowarrow leftTable X j -  Page 78
Airport in Calhoun, Georgia;  October 7, 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 
367 D. plexippus 3:23 40 m flap,
soar,
glide
straight,
circle,
straight
climb,
level,
descend
127° right 320° 6.7 m/s - yes - Butterfly started at 0.5 m, flapped up to a thermal, began to circle and soar and climbed to 40 m, then left the thermal and glided back down to about 1 m.
368 D. plexippus 3:41 15 m soar straight,
circle
level,
climb
134° 230° 320° 4.5 m/s - yes - Butterfly was soaring level at 10 m when it encountered stronger lift and climbed to 15 m.  Three more D. plexippus were seen, one of which was higher than the observed migrant.
369 D. plexippus 3:44 500 m flap,
soar
straight,
circle
level, climb 149° 225° 321° 6.3 m/s - yes - Butterfly was flapping along at 7 m when it encountered thermal, began to soar in circles, and climbed cloudbase (500 m).  John Westbrook and Wayne Wolf used radar 'slaved' to the theodolite to track the butterfly for 1 km.  Swifts were foraging.
370 D. plexippus 3:46 - glide straight descend - - - - - - - Butterfly glided straight into a tree and landed.
371 D. plexippus 3:47 100 m soar circle,
straight
level 153° 224° 307° 2.2 m/s - yes - Butterfly started at 60 m and used both circling and straight soaring flight to climb to 100 m before it vanished.