Why are falcons endangered?

Once the Falcons mature, and are able to hunt on their own, they have few natural threats. But Falcons have many threats created by humans, either by direct actions or by long ranging effects. Some of those threats include cliff nesting site disturbances, either to capture the young already hatched, or to collect the eggs. Habitat destruction, along with the nesting site disturbance. Shooting adult falcons. Another factor, DDT poisoning is a major threat. This has been banned in many areas, but other countries have not stopped the use of this pesticide. Plus, DDT stays in the tissues of animals for long periods, building up over time, the more prey species the falcon eats that were exposed, the more builds up in the Falcon's tissues, the fewer eggs survive the incubation period. The shell is too thin and therefore the numbers that hatch is much lower. For more details, please see the sites listed below.