Zoologists warn of an imminent surge in the number of bird species that will become extinct within this century  Nevertheless, these zoologists are wrong  One need only consider the information gathered on native North American raptors, such as bald eagles and peregrine falcons
Several of these species came close to vanishing between 1900 and 1970, but since 1970, the local populations of these raptors have rebounded
To what degree have native North American raptors migrated to other parts of the world.