In a production facility, labor and material costs are usually variable costs that increase as the volume of production increases. It takes more labor and material to produce more output, so the cost of labor and material varies in direct proportion to the volume of output.
The harpy eagle's name comes from. the harpies of Greek mythology which were ferocious winged creatures with sharp claws, a woman's face and a vulture's body. The average weight of a harpy eagle is 18.4 lbs (8.2 kg). Female harpy eagles are larger than the males. A female can weigh from 14 to 18 lbs (7-9 kg), while the males weigh 10 to 16 lbs (5-8 kg). Their body length is between 36 and 40 inches (1 meter). Their feathers are slate-black above and white to light gray underneath.
The harpy eagle prefers large, uninterrupted forest habitat. Also, open patches of forest must be nearby for hunting. They feed mainly on tree-dwelling animals such as sloths, monkeys, opossums, and some reptiles and other birds.Prey is caught by flying through the trees with a quick and hard strike.arpy eagles are said to be the largest and most powerful of the eagles. They are found in lowland tropical rainforests from southern Mexico to northern Argentina. Adults can reach up to 3.5 feet long and can weigh up to 20 lb. Their wingspans can reach as high as 6.5 feet.