Forget Pole-to-Pole Epics: The Shortest Bird Migration Is Under 300 Meters

When you think of seasonal bird migrations, you probably picture journeys of thousands of kilometers high above the oceans, but it turns out that the shortest migration doesn’t exceed a few hundred meters.

Mini-migration

This record is held by the dusky grouse (Dendragapus obscurus), a North American bird closely related to pheasants and partridges. With a wingspan reaching up to 70 centimeters and a adult weight close to one kilogram, it is primarily found in the forests of the western United States, particularly the Rocky Mountains and the Sierra Nevada.

Males display blue-gray plumage, orange caruncles, and a fuller tail and neck, while females wear a speckled brown that helps them blend into their forest surroundings. During the mating season, the males perform complex choreographies accompanied by subdued vocalizations to attract potential mates.

According to Guinness World Records, the minuscule migration of D. obscurus takes it from the conifer forests, where it spent the cold season feeding on needles, to the lower, broadleaf forests, where buds, leaves and berries form the bulk of its meals.

At the start of autumn, the inverse scenario occurs. On average, these movements do not exceed 300 meters.

Distance records

At the other end of the spectrum, we find the Arctic tern (Sterna paradisaea), which nests beyond the Arctic Circle during the boreal summer and then heads south toward Antarctica, embarking on a staggering journey of more than 40,000 kilometers, with numerous layovers along the way.

When it comes to nonstop migration, the bar-tailed godwit (Limosa lapponica) holds the record. A few years ago, tracking devices revealed that a four-month-old individual covered 13,500 kilometers in just 11 days.