How to identify

Swallows are small birds with dark, glossy-blue backs, red throats, pale underparts and long tail streamers. They are extremely agile in flight and spend most of their time in the air. They are widespread breeding birds in the Northern Hemisphere, migrating south in winter. Swallow numbers in the UK have fluctuated over the last 30 years with strong regional variation in trends.

Call

Swallow

Tomas Belka / xeno-canto

Key features to look out for

  • Glossy blue-black head and back, without the white rump seen on House Martins 
  • Pale, cream underside with a dark band on the chest 
  • Red throat  
  • Distinctive long, forked tail with thin streamers (juveniles don’t have streamers) 
  • Swallows have longer wings than martins 
Swallow perched on rusty barbed wire.
Swallow
Swift, swallow or martin?

Each spring, Swifts, Swallows, House Martins and Sand Martins make one of nature’s most epic journeys, flying all the way from Africa to our shores to breed. 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.

Distribution

Unlike Swifts, Swallows rarely venture into towns, preferring open countryside where flying insects are plentiful. They can often be seen around open water too. As autumn approaches, large groups of Swallows often congregate on overhead wires and in reedbeds before heading south, back to Africa. 

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

Swallows are very graceful and acrobatic in flight, darting and gliding low to the ground in search of insects. You might see them skimming over lakes and rivers, scooping up water to drink. 

Call/song

Swallows have twittering, trilling calls which are distinctly different from the screams of Swifts.

Nesting

Swallows like to nest in barns, sheds and other outbuildings. They build their cup-shaped nests from mud, usually on a beam, ledge or joist that’s sheltered from the elements. As the chicks grow, you might see their heads pop up over the rim of the nest to demand food from their parents.  

A Barn Swallow perched with an insect in its mouth.
Swallow
Did you know?

People used to believe that Swallows hibernated at the bottom of ponds over winter! Now we know that they fly all the way to Africa in autumn, before returning to our shores in spring.  

Key facts