Sand Martin vs Barn Swallow

In short

The Sand Martin (Riparia riparia) and Barn Swallow (Hirundo rustica) can be distinguished primarily by their tail shape and plumage. The Barn Swallow has a long, deeply forked tail and glossy steel-blue upperparts, while the Sand Martin has a shorter, less forked tail and a more uniform brown coloration.

Identification tips

• Tail shape: Barn Swallow has a long, deeply forked tail; Sand Martin has a shorter, less forked tail.
• Plumage: Look for the glossy steel-blue upperparts and rufous-chestnut throat of the Barn Swallow.
• Breast band: Sand Martin has a distinct brown breast band against white underparts.
• Habitat: Consider the habitat; Sand Martins are often near sandbanks, Barn Swallows are more adaptable to various open areas.

Size

Barn Swallow is larger, with a length of 17–19 cm, compared to the smaller Sand Martin.

Plumage

Barn Swallow has glossy steel-blue upperparts and a rufous-chestnut throat with a broad steel-blue breastband. In contrast, the Sand Martin is more uniformly brown above with a distinct brown breast band and white underparts.

Behaviour

Both species are aerial insectivores, but Barn Swallows are often seen skimming low over fields and water, while Sand Martins are more associated with sandbanks and quarries.

Habitat

Sand Martins are typically found near sandbanks and gravel pits, whereas Barn Swallows are more widespread, often seen in open fields and near human habitation.

Voice

Vocalizations are not a primary distinguishing feature in the field; both species have twittering calls.