The common swift is a master of the air that rarely touches the ground.

Nature · Published 3 October 2026 Swipe more like this →

In short: Swifts are aerial athletes that spend almost their entire lives on the wing. They eat, drink, sleep, and even mate while flying, only landing to nest. These birds are among the fastest in level flight, reaching speeds of 69 mph during their incredible 14,000-mile annual migration journeys.

The common swift, or Apus apus, is a medium-sized bird perfectly adapted for a life in the sky. With long, curved wings and a short, forked tail, these birds are built for speed and endurance. They are so committed to their aerial existence that they rarely land, except when they return to their breeding grounds to raise their young. During their lifetime, a single swift can travel approximately two million miles, a distance equivalent to four round trips to the Moon.

These birds are summer visitors to the UK, arriving from Africa starting in late April and departing from early August. They are highly social, often forming 'screaming parties' that zoom around buildings at high speeds. Because they rely on buildings for nesting—squeezing into tiny gaps under eaves or roofs—the renovation of older structures has significantly reduced available nesting sites. This habitat loss is a primary factor in their population decline, which saw a 62% drop between 1995 and 2021.

Conservation efforts are now critical, as the species was added to the UK's Red List of Birds of Conservation Concern in 2021. For every ten swifts recorded in 1995, only about three remained by 2022. To support them, experts recommend installing wooden nest boxes on houses. These birds are not just survivors but long-distance athletes, navigating complex migratory routes to reach their breeding sites, where they pair for life and return to the same location annually to renovate their nests.

While they are often confused with swallows or martins, swifts are distinct in their behavior and anatomy. They do not perch on wires and are capable of taking flight from level ground, despite historical myths suggesting otherwise. Their diet consists entirely of flying insects and airborne spiders, which they catch on the wing. As they continue to face environmental pressures, understanding their unique life cycle remains essential for protecting these remarkable, high-flying visitors.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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