The flight speed of birds is more complex than previously thought

https://www.nasa.gov/news/releases/latest/index.html

The flight speed of birds is more complex than research has previously managed to show. In a new study from Lund University in Sweden, researchers have found that birds use multiple – each one simple yet effective—methods to control their speed in the air and compensate for tailwind, headwind and sidewind.
Source: Psys.org
The flight speed of birds is more complex than previously thought
Psys.org