Home  ¦ Index to Field Studies  ¦ Current directory  ¦ Tables:  ¦ I a  ¦ II a  ¦ III a  ¦ IV a  ¦ V a  ¦ VI a  ¦ VII a  ¦ VIII a  ¦ IX a,  IX b,  IX c,  IX d,  IX e,  IX f,  IX g,  IX h  ¦ X a  ¦ XI a  ¦ XII a  ¦ XIII a ¦

left arrowarrow leftTable IX d -  Page 64
Airport in Calhoun, Georgia;  October 6, 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 
- - 11:36 - - - - - - 292° 3.4 m/s - yes - Swifts were foraging.  Swing in wind direction announced that the cold front had arrived.
314 D. plexippus 11:44 30 m flap,
soar,
glide
straight,
circle
straight
climb,
descend
122° right 288° 2.0 m/s - yes - Butterfly started at 6 m, flapped up and encountered a thermal, circled and soared to 30 m, then glided back down to 15 m.
315 D. plexippus 11:52 - - straight level 136° 228° 290° 2.2 m/s 22.5°C yes - I missed recording altitude and type of flight. Wind was from SW at higher altitudes.  There were obvious signs of convection.
- - 11:57 - - - - - - 297° 1.1 m/s - - - -
- - 12:04 - - - - - - 308° 1.7 m/s - yes - A D. plexippus was seen flying near the hanger.  Vultures were soaring at 300 m.
Break - 12:12 - - - - - - - - - - - -
Resume - 12:17 - - - - - - - - - - - WW:  There were still no targets being detected by radar.
316 D. plexippus - 6 m flap straight descend,
landed
W - 293° 1.3 m/s 20.5°C - 100% overcast Butterfly started at 6 m, steadily descended, and landed.
- - 12:29 - - - - - - - - - - - WW:  Radar was showing occasional targets.  A P. sennae flew past.