Diseases may cause serious losses in already small populations of endangered speciesWhooping crane (insect-borne virus, tuberculosis)Humboldt penguin (West Nile virus)Aleutian Canada goose (avian cholera霍亂- vaccine when banding)Peregrine falcons (high level lead in Rock dove- no need to worry)Bald eagle (AVM- unable transmit and receive nerve impulses, disoriented)