It seems like it would be hard for penguins to tell each other apart when they’re nesting in huge colonies […] ...

Here is a list of the most colourful birds in the world. The scarlet macaw is a large parrot species. It can grow 32 inches long and weigh up to 2.2 pounds. Mainly red in color, it also has blue wings ...

Monotypic (smaller, darker resident birds in southern Appalachians sometimes separated as appalachiensis). Length 8". Shows less red on ... fall but the black-and-white head and chest pattern ...