The Red-Throated Loon is the smallest and most delicate of all loons. It’s named for the rusty-red patch on its throat that appears in breeding season. It’s also the most agile, able to take off from very small ponds.
Red-Throated Loon Overview
| Feature | Description |
| Size | Smallest loon – about 25 inches long |
| Shape | Slender with a slightly upturned bill |
| Color Pattern | Gray back, white underside, and a red throat patch in summer |
| Habitat | Arctic tundra ponds in summer; coastal waters in winter |
| Behavior | Flies directly from small ponds; carries food in bill to feed chicks |
How to Identify a Red-Throated Loon
In summer, look for the reddish throat patch against its gray head and neck.
In winter, it turns silvery-gray above and white below. Its slim body and slightly upturned bill make it stand out from other loons.
Where Do Red-Throated Loons Live?
They breed in the Arctic tundra across Alaska, Canada, and northern Europe.
IIn winter, they migrate to coastal areas, often seen along the Atlantic and Pacific shores.
What Do Red-Throated Loons Eat?
They feed mainly on small fish and crustaceans, diving underwater to chase prey.
They are unique among loons because they can carry food in their bills back to the nest to feed their young.
What Sound Does a Red-Throated Loon Make?
The Red-Throated Loon’s call is a quick, high-pitched wail, softer than the Common Loon’s. It’s often heard at dawn or during migration.
How Is the Red-Throated Loon Different From Other Loons?
| Compared To | Key Differences |
| Common Loon | Much smaller, lighter build; red throat patch instead of black-and-white checkers |
| Pacific Loon | Thinner bill and smaller body; can take off from smaller ponds |