How did knowledge of the bird skeleton help humans develop airplanes?

The flight mechanism in birds' bodies, particularly those with hollow bones as their skeletons, influenced how human airplanes' wing structures. These hollow, stiff bird bones offer both strength and lightness which can withstand flying stress while saving a great deal of weight. When constructing aeroplanes, aviation pioneers employed lightweight hollow structures that resemble this idea so to make aircrafts that can handle large distances safely in air.