Short abstract from the book: The jack snipe is a rather common passage migrant in
Denmark in September–November and in April.
The first jack snipe was ringed in 1949, with the majority ringed in the 1960s. The majority of the recovered birds
were ringed in September and October and few during winter.
Most were ringed in Vejlerne and on Amager.
Only a few birds have been recovered inside the breeding
area, but it is evident that some migrants from northern
Sweden and Finland pass Denmark on their migration. Some
birds have been found in Denmark more than a month after
ringing, while others continue their migration rather quickly.
In November the mean position is south of Denmark. Some
migrate W, others due S. One Danish ringed jack snipe was
recovered in Morocco in late November, and during winter
birds have been recovered in Ireland, Belgium, France and
Italy. A few winter in Denmark and in spring most birds are
observed in April. Jack snipes arrive at the breeding sites in
north Scandinavia from mid-April to mid-May.
Read more about the species in the chapter from The Danish Bird Migration Atlashere