Arctic National Wildlife Refuge
[This page may need to be printed in "landscape" orientation because of the wide map.]
Caribou Movements in a Late Spring Year (1987)
When spring comes late to the range of the Porcupine Caribou Herd (PCH), migration of
caribou to their traditional calving grounds on the foothills and coastal
plain of the Arctic Refuge is delayed.
This map shows the herd's calving distribution and post calving movements as represented by
the movements of a satellite-collared cow caribou during the late spring of 1987.
In most years a majority of the herd's calves are born on the foothills and coastal plain of
the Arctic Refuge. In 1987, most calves were born in Canada and
along the migration route. After the calves were strong enough to travel, the herd moved to
the Arctic Refuge to get nutritious forage. In July the animals moved to coastal
areas to find relief from mosquitos.
September 12, 2008