Short abstract from the book: The goldeneye has a rather restricted breeding population in
Denmark centred on northern Zealand, where nest boxes have
helped the species to settle. From late June to late September
great numbers of goldeneyes used to moult in Limfjord, but
the area seems to have lost its importance. During winter
many goldeneys winter in Danish waters. In Denmark the
first goldeneye was ringed in 1940, with most ringed in the
1980s and the first half of the 1990s. The recovered birds
were mainly ringed outside the breeding period, and most are
probably passage migrants. All recoveries are from Denmark
or further north, which indicates that the majority of the
migrants visiting Denmark remain here until they travel back
to their breeding sites. The recoveries show that the migrants
come from Norway, Sweden, Finland and northwest Russia.
Furthermore, some goldeneyes from Germany and the Czech
Republic have been recovered in Denmark, some in the first
autumn after ringing. The first migrants have been found in
July and August, but the majority are from October–February.
The spring migration takes place in March, and by April
many of the visitors have returned to their breeding sites.
Read more about the species in the chapter from The Danish Bird Migration Atlashere
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