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left arrowarrow leftTable III o  -  Page 26
Airport in Calhoun, Georgia;  September 30, 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 
156 J. coenia 3:27 60 m soar circle,
straight
level 185°   012° 5.6 m/s - yes - Butterfly unpredictably reversed its direction of circling.
157 J. coenia 3:31 - glide,
flap
straight,
erratic
descend,
level
202° right 360° 2.7 m/s - - - Missed altitude.  Butterfly switched to flapping, erratic, flight as it neared the ground.  A foraging J. coenia was also seen.
158 D. plexippus 3:33 130 m soar,
glide
straight level,
descend
228° right 008° 4.5 m/s - yes - Butterfly made a very rapid descent to 3 m, towards a grove of trees.  A second D. plexippus was seen flapping along at 10 m and a third was foraging in vegetation.  Sharp-shinned hawks were also flying in the thermal.
159 D. plexippus 3:37 60 m glide straight descend 179° 238° 004° 3.6 m/s - yes 60%
cloud
cover
Butterfly descended to 3 m and appeared to be heading towards trees.  Vultures and a J. coenia were also seen in the same thermal.
160 D. plexippus 3:40 60 m glide,
soar
straight,
circle,
straight
descend,
level
198° 266° 360° 4.9 m/s - yes - Butterfly descended to 30 m then leveled off and began to soar in a thermal.  A second D. plexippus was seen flying at a higher altitude.
161 D. plexippus 3:44 130 m soar circle climb 163° - 331° 1.8 m/s - yes - Migrant climbed up from 100 m.  The thermal passing through the field site was full of D. plexippus.   I began to lose sight of the higher butterflies against the bright sky.