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Parasitic Jaegers breed throughout much of the Canadian Arctic but typically occur at low densities. Because their breeding range is remote and they winter at sea, they are not well represented by any large-scale, systematic monitoring programs. Parasitic Jaegers also breed in northern Scotland, where their numbers have been variable in recent decades, with increases in the 1970s, decreases in the 1980s, and increases in the 1990s (Wiley and Lee 1999). However, few data are available from their Canadian Arctic breeding ground with which to assess their population status and trend. Thus, how their population levels in Canada relate to those of about 1970 currently remains unknown. As such, a national population goal for the Parasitic Jaeger has not yet been determined.
