Knowra Arctic tern Arctic tern The Arctic tern is a migratory seabird that breeds across Arctic and sub-Arctic regions and travels between polar regions, making one of the longest annual migrations of any animal.
Arctic tern migration : The annual movement of Arctic terns between breeding grounds in the north and wintering areas near Antarctica. This route is the defining movement behind the tern’s extraordinary annual journey.
Sternidae : The seabird family that includes terns, characterized by streamlined bodies and pointed wings. The Arctic tern belongs to this family of agile, often fish-eating seabirds.
Animal tracking : The use of tags and other methods to record animal movement and location. Tracking transformed the tern’s migration from an estimate into a mapped journey.
Arctic amplification : The phenomenon in which the Arctic warms faster than the global average. Warming can alter the northern breeding environment that terns depend on.
Animal migration : The regular, often seasonal movement of animals between regions. The tern’s journey is an extreme example of seasonal migration.
Seabird : A bird adapted to life in marine environments, often feeding at sea and nesting on land. The tern’s oceanic lifestyle places it among seabirds.
Light-level geolocation : A tracking method that infers geographic position from recorded sunrise and sunset times. This method made it possible to follow terns across vast, remote ocean regions.
Climate change and seabirds : The effects of shifting climate conditions on seabird habitats, food supplies, and populations. The tern’s polar distribution makes climate-driven changes relevant at both ends of its range.
Bird navigation : The sensory and behavioral processes birds use to orient and travel over distances. Navigation helps explain how terns follow long oceanic routes.
Arctic tern plumage : The Arctic tern’s seasonal feather appearance, including a dark cap, pale body, and red bill in breeding condition. Its distinctive plumage helps distinguish the species from similar terns.
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