Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports.
For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Riccardo Pravettoni, UNEP/GRID-Arendal)
personal communication with Dr. Peter Prokosch,
GRID-Arendal; Piersma, T., Davidson, N., The Migration of
Knots, WSG Bulletin 64, 1992
Uploaded on Wednesday 01 Feb 2012
Global ﬂyways of the six subspecies of Red Knot
Riccardo Pravettoni, UNEP/GRID-Arendal
The Red Knot is a migratory shorebird that travels up to 20,000 km twice a year from its breeding grounds on
the high Arctic tundra to its southern non-breeding sites. Along with having one of the longest total migrations
of any bird, some populations also fly as much as 8,000–9,000 km between stopover sites in a single flight. As a shellfish-eating specialist avoiding pathogen-rich freshwater habitats, the Red Knot relies on the few large tidal flats with abundant food resources that the world has to offer. To undertake the physiologically demanding flight
from West Africa to northern Siberia, for example, Calidris c. canutus refuels during three weeks of fast feeding
in the national parks of the European Wadden Sea. After nearly doubling its weight, it burns off fat stores during
the 3 or more days of non-stop flying.