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Fig. 5. Mean acceleration-compensated differential pressures for inner and outer
tail positions, and distal and proximal wing positions. Also included are
acceleration signals for inner and outer tail positions (second pair of
traces) and the proximal wing position - the synchronising accelerometer.
Tracings of the pigeon through the wing stroke cycle match the timing of the
graph. Values are mean ±1 S.D. (shown in black; N=3
pigeons). The vertical red broken lines show the relationship between a peak
in both inner and outer tail pressure signal, an upwards acceleration of the
wings towards the end of downstroke, and a concurrent downwards acceleration
of the tail.
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