Have you noticed that some planes have engines on the wings while others have them on the tail? In fact, there are purposeful ...

The Wright Brothers studied bird flight before they designed the first airplane. Now modern aircraft fly higher and faster ...

It's a classic aerodynamic problem: most wing shapes that perform well at high ... the plane has "bumper gear" beneath its tail in case it tips to the ground during takeoff or landing.

Juvenile Cooper’s hawk can show the same overall markings, but no malar stripe; shorter, barred wings and much longer tail give a different shape.

but at closer range all have feathered heads and different wing shapes. Zone-tailed also shows banded tail and yellow cere and legs.