What is the heaviest bird in the world?

Answer 1

The Ostrich can weigh well in excess of 300 pounds and is the heaviest bird in the world, but it cannot fly.

The heaviest bird capable of flight is the Great Bustard, which weighs approximately 40 pounds.

Answer 2

Ok, there is a tie, Between the African Crowned Eagle, Philippines Eagle, Or the Harpy Eagle. On my own opion, The African Crowned Eagle is the strongest, It can lift up to 75lbs. And it's wing spand is about six feet long, and two feet wide. Well, That's what i learned about them. You could study the A crowned eagle a bit if you want learn more about it.

Quick question! Just wanted to ask where does an ostrich fit into this question? An ostrich can carry an average full grown man and run at speeds up to 15-20 miles per hour while carrying him!!!!

Answer 3

There are 3 ways I see to answer this:

For sheer strength involving carrying something and flying: overall, the American Harpy Eagle is probably the strongest - female Harpy Eagles (being larger than the males), weighing around 9 kg (20 lbs), regularly takes prey on the wing that weigh around the same - 9 kg (20 lbs) - and have been know to fly (with difficulty and for short distances) carrying animals weighing over twice their weight 18+ kg (40+ lbs).

Certain owls are stronger pound for pound - for instance, although smaller than Eagles, Great Horned Owls routinely fly with weights 3 times their own - a 2.5 kg (5.5 lbs) GHO can lift 7-8 kg (16-17 lbs).

And just for completeness; Ostriches, although they can't fly at all, can carry a 150 lb man on it's back and still run faster than human athletes.