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Great Circle Hypotheis
Magnetoclinic Hypothesis
Magnetic-Latitude Hypothesis
Compass Bearings Hypothesis
Suns' Azimuth Hypothesis
Expansion-Contraction Hypothesis
Always Advance Hypothesis
Never Go Back Hypothesis
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Analysis of Field Data for the 1988 Monarch
Butterfly Migration in Resaca and Calhoun, Georgia
 Table IX b
Mean Vanishing bearing for Danaus plexippus in East Winds: Data
used in Calculations
September 26 - October 2, 1988 observations of the Danaus plexippus
migration in Resaca and Calhoun, Georgia
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|
Date |
Table |
Number of
Observations |
Field Data
Code Numbers |
Reasons for
Exclusion |
|
Sept. 26 |
I
|
- |
- |
NA |
27 |
II
|
- |
- |
NA |
28 |
III
|
3
(5) |
96, 99, 126, 127, 128 |
Flying above the inversion. |
29 |
IV
|
3 |
158, 184, 192 |
NA |
30 |
V
|
- (1) |
238 |
No bearing |
Oct. 1 |
VI
|
- |
- |
NA |
2 |
VII
|
- |
- |
NA |
|
Total |
7 |
6 |

Data for N winds
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Data for SE winds
|
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Any observations hi-lighted in red were excluded from calculations for reasons
given in column 5.
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