How to identify

The Swift is a medium-sized aerial bird, which is a superb flyer. Sleeping, eating, bathing and even mating on the wing (while flying), Swifts rarely touch the ground. They are also the fastest birds in level flight, with an impressive top speed of 69mph. Swifts are plain sooty brown, with a white throat, but in flight against the sky they appear black. They have curved wings and a forked tail. Swifts are summer visitors, breeding across the UK, but are most numerous in the south and east. Spending their winters in Africa, Swifts migrate 3,400 miles twice a year, stopping off to refuel in places like Portugal and France along the way.

Call

Swift

Patrik Åberg / xeno-canto

Key features to look out for

  • Dark, sooty brown but can look black against the sky 
  • Pale patch on the throat, but this is often difficult to see in flight 
  • Long, pointed wings held in a ‘boomerang’ shape 
  • Wings are narrower than those of a Swallow or martin 
  • Short, forked tail which can be folded to a point 
  • Bullet-shaped head 
  • You’ll often hear them before you see them – they make an unmistakable, high-pitched ‘scream’ 
A Swift flying towards the camera with trees in the background.
Swift
Swift, swallow or martin?

At first glance, these avian athletes can look very similar, but there are some key differences between them. Have a read of our handy ID guide and soon you’ll know your Swifts from your Swallows.

Conservation status

Sadly, Swift numbers are plummeting, and they’re now on the UK’s Red List of Birds of Conservation Concern. For every ten Swifts zooming across our skies in 1995, there were only about three by 2022. 

Where and when to see them

You could see Swifts flying high in the sky over most habitats, as they search for small invertebrates to eat and to feed to their chicks. Nesting Swifts zoom around buildings at roof level.

Swifts migrate to the UK from Africa each year, and only spend a few months with us while their raise their chicks. Swifts begin arriving from late April, with most arriving in May. They then head back to Africa from early August onwards.

Swifts are incredible birds, and one of our greatest long-distance athletes. They’ve undertaken a crazy journey to get here, one of the longest migration journeys in the world. Swifts fly around 22,000 km (or 14,000 miles) every year. 

Difficulty rating - Easy

Despite suffering huge declines in recent years, Swifts are fairly easy to see as they often nest in our towns and cities.

Two swifts flying over a house roof with an aerial fixed to the top.
Swifts
Swift Mapper

We’re taking action to help Swifts. We need your help to look out for nesting or screaming Swifts near you so we can identify nest sites that need protection.

Key

  1. Resident
  2. Passage
  3. Summer
  4. Winter
* This map is intended as a guide. It shows general distribution rather than detailed, localised populations.
  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

Behaviour

Swifts are masters of the air and spend almost their entire lives in flight – eating, drinking, sleeping and even mating on the wing. They usually only land when it’s time to nest, so you’ll never see them perched on overhead wires like Swallows. Groups of Swifts can often be seen flying around rooftops at high speed. 

Nesting

After a long flight back from their summer in Africa, Swifts have one thing on their minds – to mate. Swifts pair for life, returning to the same site each year for a little nest renovation before laying and incubating their eggs.

They like to live in houses and churches, squeezing through tiny gaps to nest inside roofs. But as more old buildings are renovated and gaps in soffits closed up, Swift nest sites are fast disappearing. This, in part, resulted in Swifts being added to the red list in the 2021 UK Conservation Status Report.

Swifts are short-stayed visitors, only rearing one brood while on their breeding grounds. Therefore, they must make their journey worthwhile. Why not give them a helping hand and fix a wooden Swift box to your house? 

Close up of a Swift in flight, wings outstretched with blue sky and greenery in the background.
Swift
Your guide to helping Swifts

Swifts make one of nature’s most incredible journeys. But they’re in trouble. The RSPB is working hard to protect them and there are lots of ways that you can help them too.

Three Swifts flying in a V formation overhead against a pink sunset.
Swift
Did you know?

During its lifetime, a Swift can fly around two million miles – that’s equivalent to more than four trips to the Moon and back!

Key facts