Mary's journey
May 2017
Arrives at the breeding site on the Russian tundra
Sep 2017
Flies to western Latvia then Germany
Winter 2017-18
In Germany, 3 degrees north of her 2016 wintering site
Feb 2017
2,175 mile (3,500km) spring migration to her breeding grounds
Winter 2016-17
Mary the swan spends the
winter in the Netherlands
May 2017
Arrives at the breeding site on the Russian tundra
Sep 2017
Flies to western Latvia then Germany
Winter 2017-18
In Germany, 3 degrees north of her 2016 wintering site
Feb 2017
2,175 mile (3,500km) spring migration to her breeding grounds
Winter 2016-17
Mary the swan spends the
winter in the Netherlands
May 2017
Arrives at the breeding site on the Russian tundra
Sep 2017
Flies to western Latvia for two months, then on to Germany
Winter 2017-18
Feb 2017
2,175 mile (3,500km) spring migration to her breeding grounds
In Germany, 3 degrees north of her 2016 wintering site
Winter 2016-17
Mary the swan spends the
winter in the Netherlands
May 2017
Arrives at the breeding site on the Russian tundra
Sep 2017
Flies to western Latvia for two months, then on to Germany
Feb 2017
2,175 mile (3,500km) spring migration to her breeding grounds
Winter 2017-18
In Germany, 3 degrees north of her 2016 wintering site
Winter 2016-17
Mary the swan spends the
winter in the Netherlands