Umbrella birds weigh about one pound.
While there are many South American birds with a wide wingspan, the Condor is the largest one. Condor is a specie of vulture with a wingspan of up to 10-12 feet.
It would be the same as saying a birds wingspan ... the bird may look small but when it spreads its wings it grow by upwards of 6 feet ... when a play is on any Field his wingspan is how far he/she can starch to the left or right ...
Black-capped is 8 inches (Sibley Guide to Birds of NA).
California condor, eight and a half foot wingspan.
I think it has to do with their wingspan. Their wings are so long they have to hop to really be able to spread them out. I think their wingspan is over 6 foot in length on some birds.
judy and aaron
steak and poates
It depends. Long narrow wings on planes and birds have an advantage for long distance flight where maneuverability is not a big issue. Shorter broad wings on planes or birds provide an advantage for making quicky rolls and turns, where maneuverability is the advantage.
Raptors are birds of prey. The Martial Eagle of Africa is the largest bird of prey with a wingspan of 2 meters.