Kori bustards are the largest flying birds, according to the United Kingdom's Natural History Museum. They live in southern Africa and can weigh about 42 pounds. They have a 9-foot wingspan.

Despite its massive wings, the Andean condor isn’t a heavy bird, weighing between 7 to 15 kilograms (15 to 33 pounds).But what it lacks in bulk, it makes up for in endurance—this scavenger can ...

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

But elephant birds, who lived more than 1,200 years ago, were likely the biggest birds to ever exist at over 1,500 pounds. Some even clocked in around 1,900 pounds , according to Scientific American.

The biggest bird in the world weighs between 220 and 350 pounds, but it doesn't even come close to the largest bird who ever lived. Here's who it is.

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.

Biggest penguin in history was 'monster bird,' weighed over 300 pounds Scientists discovered Kumimanu fordycei, a 'monster bird' By Julia Musto Fox News. Published February 10, 2023 3:14pm EST.

A marine heat wave in the Pacific Ocean killed some 4 million common murres in Alaska, researchers say — the largest die-off of any bird species ever recorded in the modern era.

Alaska birds suffered biggest die-off in recorded history in ‘Blob’ heat wave, new study says. 4 million deaths of common murres during the intense North Pacific marine heatwave.