if the robot can fold the wings just like a bird, then it can access more areas or more places,” Shin said. Additional sensors will also help it land autonomously, according to the Swiss ...

On perched bird, wing patch shows only as a thin white line along the leading edge of the folded wing. Adult male: grayish or grayish brown head and neck, with neck and breast washed lightly with ...

This bird made hawk ... 3 bands on folded secondaries. Juvenile Cooper’s hawk can show the same overall markings, but no malar stripe; shorter, barred wings and much longer tail give a different ...