Flies groom frequently and carefully. Dirt on a fly's wings will have the same effect as ice on the wings of an airplane. Dirt on any of the fine hairs covering the fly's body clogs it organs of smell. And because flies need keen vision to detect predators like spiders, they have hundreds of eyes massed in the two bulging sense organs in front of their heads, but no eyelids with which to clean them. THE MOVE Autumn is a time of migration.
Animals ranging from dragonflies to whales are on the move.
During an autumn downpour, frogs may literally cover the roads. The green darner dragonflies, monarch butterflies and broad-winged hawks are all traveling roughly the same route south for the winter.