The biggest of all the birds on Earth, both in size and weight, is undoubtedly the ostrich. These behemoth birds grow up to 9 feet (2.7 m) tall and can weigh up to 287 pounds (130 kg), according ...

Out of the over 10,000 species of birds on Earth, most are capable of flight. They have wingspans that range from 5.5 ...

The giant moa has been extinct for 900 years, but Maori researchers working Colossal Biosciences and filmmaker Peter Jackson are partnering to bring the species back.