Effects of wing loading on take-off and turning performance which is a decisive factor in the selection of resting location of the Great Bustard (Otis tarda)

Abstract

Great Bustard is one of the heaviest birds in the Western Palearctic, so aerodynamic effects are criticallyimportant for their distribution and conversation. To understand why do they need to find open areas during the restingand feeding time, aerodynamic features were discussed in this study. Mass of the Great Bustard and having proportionallysmall wings cause weak flight performance. In this work, those disadvantages were identified by aerodynamic approachand observation. Great Bustard tries to use the relative wind during the take-off to close these disadvantages. Also, turningperformance which is affected by the same specifications with take-off performance can determine their behavior. As aresult, aerodynamic factors may also play important role in their current status.