Red-throated loon

One of the earliest waterbirds to begin nesting in the Arctic spring, sometimes before ice fully melts

Charles J. Sharp


Red-throated loon

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One of the earliest waterbirds to begin nesting in the Arctic spring, sometimes before ice fully melts

Population 200,000 – 600,000

The smallest and most slender of the loon family, yet it carries the same calm, almost ancient presence you see in its larger relatives. Found across Arctic and subarctic regions of North America, Europe, and Asia, it spends its summers breeding on quiet tundra ponds before migrating to coastal waters for winter. Compared to other loons, it has a more delicate build and a graceful posture, often holding its bill slightly tilted upward, as if listening to the wind or watching the sky for passing clouds.

In breeding season, the red-throated loon transforms into a striking bird: its plain winter plumage gives way to a smooth gray head, fine white stripes on the neck, and a deep rust-red throat patch that glows in the soft Arctic light. Outside breeding months, it returns to a more modest look — clean white underside, mottled gray back, and a pale face — blending in perfectly with stormy northern seas. Unlike most loons, it can take off from very small bodies of water, a useful trait when nesting on shallow tundra pools. It often launches into the air with a surprising burst of energy, rising quickly rather than performing the long water-run most loons require.

Its behavior reflects the sparseness of its northern home. The red-throated loon is quiet and focused, feeding mostly on small fish, crustaceans, and aquatic invertebrates. It picks prey near the surface more often than diving deep like other loon species, though it’s still a strong and capable underwater hunter. During breeding season, pairs are highly territorial and form strong bonds, often returning to the same pond year after year. Their nest is typically a simple scrape near water, allowing quick escapes into the pond at the first sign of danger — crucial in regions where foxes, gulls, and jaegers keep watch for eggs and chicks.

Distribution

Country
Population est.
Status
Year
Comments
Albania
2018
Seasonality Uncertain
Algeria
2018
Vagrant
Armenia
2018
Vagrant
Austria
2018
Non-Breeding
Azerbaijan
2018
Non-Breeding
Bahamas
2018
Seasonality Uncertain
Belarus
2018
Vagrant
Belgium
2018
Non-Breeding
Bosnia And Herz.
2018
Vagrant
Bulgaria
2018
Non-Breeding
Canada
2018
China
2018
Croatia
2018
Non-Breeding
Czechia
2018
Non-Breeding
Denmark
2018
Estonia
2018
Faroe Islands
2018
Finland
2018
France
2018
Gambia
2018
Vagrant
Georgia
2018
Germany
2018
Gibraltar
2018
Vagrant
Greece
2018
Non-Breeding
Greenland
2018
Breeding
Hungary
2018
Non-Breeding
Iceland
2018
India
2018
Iran
2018
Non-Breeding
Ireland
2018
Israel
2018
Vagrant
Italy
2018
Non-Breeding
Japan
2018
Kazakhstan
2018
Korea
2018
Latvia
2018
Liechtenstein
2018
Vagrant
Lithuania
2018
Non-Breeding
Luxembourg
2018
Vagrant
Malta
2018
Vagrant
Mexico
2018
Moldova
2018
Non-Breeding
Monaco
2018
Seasonality Uncertain
Mongolia
2018
Vagrant
Montenegro
2018
Non-Breeding
Morocco
2018
Vagrant
Netherlands
2018
Non-Breeding
North Korea
2018
North Macedonia
2018
Non-Breeding
Norway
2018
Pakistan
2018
Poland
2018
Portugal
2018
Non-Breeding
Romania
2018
Non-Breeding
Russia
2018
Saint Pierre
2018
Serbia
2018
Non-Breeding
Slovakia
2018
Non-Breeding
Slovenia
2018
Non-Breeding
Spain
2018
Non-Breeding
Svalbard
2018
Breeding
Sweden
2018
Switzerland
2018
Non-Breeding
Taiwan
2018
Tunisia
2018
Vagrant
Turkmenistan
2018
Turkey
2018
Non-Breeding
Ukraine
2018
Non-Breeding
United Kingdom
2018
United States
2018
Breeding

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Terrestrial / Aquatic

Altricial / Precocial

Polygamous / Monogamous

Dimorphic (size) / Monomorphic

Active: Diurnal / Nocturnal

Social behavior: Solitary / Pack / Flock

Diet: Carnivore / Herbivore / Omnivore / Piscivorous / Insectivore

Migratory: Yes / No

Domesticated: Yes / No

Dangerous: Yes / No