During their long-distance flights, Arctic Terns can cover distances of up to 11,000 miles (17,700 kilometers) or even more each way, traveling between their breeding grounds in the Arctic and their wintering grounds in the Antarctic and sub-Antarctic regions. They make use of favorable wind patterns and engage in continuous flying for extended periods, sometimes even flying nonstop for several days or weeks.
Their aerodynamically adapted bodies and their ability to efficiently conserve energy during flight are crucial for their successful migrations. Arctic Terns have long pointed wings and a streamlined body shape that minimizes drag, allowing them to soar efficiently through the air. They also exhibit a behavior called "flap-bounding" or "flap-gliding," where they alternate between flapping their wings and gliding, which helps them to minimize energy expenditure.
The Arctic Tern's impressive speed and endurance during migration have made them a subject of fascination and admiration among ornithologists and scientists alike. Their annual journeys demonstrate the incredible adaptations and resilience of bird species in navigating the challenges of long-distance travel and the importance of conservation efforts to protect these avian wonders and their habitats.