Lund University is celebrating 350 years. Read more on lunduniversity.lu.se

Menu

Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

The first bird wake

Using the first particle image velocimetry system at the animal flight lab, we succeeded in capturing the aerodynamic wake dynamics behind a freely flying thrush nightingale across its entire rage of natural flight speeds. Previous studies had measured wakes behind birds only at single speeds (a pigeon and a jackdaw at a low speed of 2.5 m/s and a kestrel at a medium speed of 7 m/s).

In our study, the evolution of the wake across speeds was captured, showing that birds do not use different so called 'gaits' at different flight speeds as in terrestrial locomotion, but that the wake changes gradually when accelerating from low flight speeds up to the maximum flight speed.

Vector fields of the wake behind a thrush nightingale
Individual consecutive panels with particle image velocimetry (PIV) data are organized to represent a full wing stroke and sorted on the wing position covered by the laser sheet.
Page Manager:
Our star thrush nightingale ready for take-off in the Lund wind tunnel
Our star thrush nightingale ready for take-off in the Lund wind tunnel.