[Odonata-l] Take-off from hanging vertically. Any videos?
colinpauladams at gmail.com
Mon Jun 12 08:02:23 PDT 2017
I should have specifically stated high-speed videos (c. 500 fps or faster).
On Mon, 12 Jun 2017 at 13:38 Colin Adams <colinpauladams at gmail.com> wrote:
> I'm interested in the initial direction of wing movement in Anisoptera
> that perch by hanging vertically (such as aeschnids). My guess is that the
> initial movement is upward, to avoid any risk of fouling the wings against
> twigs, thorns or sharp leaves. Does anyone have high-speed videos of such
> take-offs? So far I have only seen one by Erland Refling Nielsen, in which
> Brachytron pratense indeed flaps the wings upwards as the first movement.
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