Radio tracking of adelie penguin (Pygoscelis adeliae) foraging movements while at sea during the early breeding season

Adelie penguin foraging movements at sea were located and described during the early breeding season at the Cape Bird colony. Radio transmitters were attached to individual birds and 18 penguins were radio tracked over periods from 6 to 19 days while at sea. Tracking was carried out from directional antennae stations at Inclusion Hill (on Ross island above the Cape Bird penguin colony). The tracking was done while most males were incubating eggs on the colony and most females were at sea.