Short abstract from the book: n Denmark the hawk owl is a very rare winter visitor observed only during invasions in southern Scandinavia. The largest invasions ever recorded in Denmark were in 1983-84,
when several hundred hawk owls were observed, and in 1989-
90 when 16 birds were recorded. In Denmark two hawk owls
have been ringed, both in autumn 1983 and both on Amager.
Neither of these birds has been recovered. A bird ringed as a
chick on 26 June 1983 on Velikiy Island in the White Sea in
northwest Russia was found dead in western Zealand on 6
July 1984 (1,697 km SW).
Read more about the species in the chapter from The Danish Bird Migration Atlashere