Short abstract from the book: The green sandpiper is a rather rare breeding bird in
Denmark and is most common in northern Zealand. Passage
migrants are observed in Denmark in June–September and
April–May.
In Denmark the first green sandpiper was ringed in 1928,
with the majority ringed from 1950 to 1980. All the recovered birds were ringed in July–August, 77 % on Amager. The
recovered birds are probably passage migrants. Our knowledge about the origin of the passage migrants in
Denmark is very limited since none has been recovered in the
breeding area, and only three birds ringed in Sweden and
Finland have been recovered in Denmark. Adult green sandpipers arrive in Denmark from mid-June, and juveniles from
mid-July. Most have left Denmark by the end of August, when
the mean position is south of Denmark. The migration is SW
and during autumn birds have been recovered in Germany,
France and Spain. During winter recoveries are from the
Netherlands, France, Spain, Morocco and Algeria. None of
the birds has been recovered south of the Sahara, where the
majority of the population is believed to winter. The spring
migration seems to follow the same route as in autumn, i.e.
northwest Africa, Iberia and France. Green sandpipers pass
Denmark from early April to mid-May.
Read more about the species in the chapter from The Danish Bird Migration Atlashere