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

Emperor penguins don’t live on U.S. territory, so some of the Endangered Species Act’s measures meant to protect species’ habitats and prevent hunting them don’t directly apply.

Emperor penguins are the tallest and heaviest penguin species in the world and can be found swimming, playing, and raising ...