Rounded Global Status Rank: G4 - Apparently Secure

Reasons: Large range, extending from North America to South America; most U.S. populations have been stable or increasing in recent years; population status in much of Central and South America is not well known, but the species may be moderately to highly threatened throughout much of the range, mainly as a result of environmental pollution and disturbance by humans; subject to unexplained population fluctuations even where doing well overall.

Other Considerations: Listed Endangered by USFWS in entire range except for Atlantic coast of U.S., Florida and Alabama, where it was de-listed 2/4/85.