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The apparent rediscovery of the Ivory-billed Woodpecker Campephilus principalis in Arkansas, USA, …


Biology Articles » Zoology » Ornithology » Video analysis of the escape flight of Pileated Woodpecker Dryocopus pileatus: does the Ivory-billed Woodpecker Campephilus principalis persist in continental North America? » Tables

Tables
- Video analysis of the escape flight of Pileated Woodpecker Dryocopus pileatus: does the Ivory-billed Woodpecker Campephilus principalis persist in continental North America?

Table 1

Frame numbers of David Nolin's video that mark the midpoint (wings approximately horizontal) of escape flight of Pileated Woodpeckers


Wingbeat no.

0
1
2
3
4
5
6
7
8
9
10
11
PIWO flight 1
165
169
173
177
182
193
211
-
-
-
-
-
PIWO flight 2
303
307
310.5
316
321
327
334
341
348
358
364
369
PIWO flight 3
429
432.5
436
439.5
443
450
456
463
473
-
-
-
PIWO flight 4
747
751
754
758
762
767
771
777
783
790
797
-

Collinson BMC Biology 2007 5:8   doi:10.1186/1741-7007-5-8

Table 2

Mean wingbeat rates for escape flights of Pileated Woodpeckers over the first four wingbeats, the second four wingbeats, and the overall mean, combining both phases of flight


mean wingbeat rate (beats s-1)

Wingbeats
Wingbeats
Overall

1–4
5–8
mean
PIWO flight 1
7.1
-
3.9
PIWO flight 2
6.7
4.4
5.0
PIWO flight 3
8.6
4.0
6.7
PIWO flight 4
8.0
5.7
6.0
Luneau video
8.6
8.6
8.6

The underlined results represent rates that are comparable or equivalent to the woodpecker described in Fitzpatrick et al [1]. Calculations based on data presented in Table 1.

Collinson BMC Biology 2007 5:8   doi:10.1186/1741-7007-5-8


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