From 9-foot tall ostriches to albatrosses with gargantuan wingspans, here are some of the biggest birds in the world.

The SR-71 Blackbird spy plane could fly faster than Mach 3, more than 2,000 miles per hour. This allowed it to easily avoid ...

Migratory birds are some of nature’s most efficient travelers, able to cross oceans and continents in a matter of days or ...