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Eastern Red-Rumped Swallow | Cecropis daurica
Oostelijke roodstuitzwaluw | Golondrina dáurica oriental
The Asian counterpart of the Red-Rumped Swallow, from southern Siberia and the Mongolian plateau to East Asia. It has been treated as a separate species since 2024, and at a stroke a bird previously treated as a subspecies became one of north-west Europe's rarest vagrants.
Voice
As Red-Rumped Swallow, but in practice rarely of use with a vagrant. The contact call is a short, sparrow-like tswi-wit, harder and more clearly two-syllabled than the nasal note of Red-Rumped Swallow; a dry tsrr is given in flight. The song is a short muttering twitter, delivered from a wire or from inside the nest tunnel.
Recording: Sonothèque ADVL — CC0 · xeno-canto
Identification
A large, heavy Red-Rumped Swallow with long wings and long streamers. Structure and pattern are those of Red-Rumped Swallow: glossy blue-black upperparts, a rusty collar, a rusty rump and jet-black undertail coverts, with no white in the tail. The difference lies in the markings below. Where Red-Rumped Swallow has fine, thin streaks on an even buff ground, this bird is heavily and broadly streaked from the throat right onto the flanks, so that at range the underside reads as grey and lined rather than warm and plain. The rusty rump is broader but paler and often finely streaked itself, and the collar is usually broader and more complete. All of it is a matter of degree: a bird outside its range can only be nailed down on good photographs of belly, rump and tail.
Confusion species
Red-Rumped Swallow is the only species that really matters — see also the Red-Rumped Swallow species page. It is smaller and shorter-winged, with a warm buff underside on which the streaking stays fine and thin, and a narrower but deeper, more saturated rump. Beyond that pair the pitfalls are the same as for Red-Rumped Swallow: Barn Swallow has a blue breast band and white tail spots and lacks both rump and collar, House Martin is white below with a white rump, and Crag Martin is uniform brown-grey with a square tail. Away from the breeding range one rule holds: photograph the underparts and the rump, because without images a claim cannot be judged.
Habitat
On the breeding grounds a bird of open hilly and mountainous country with cliffs, gorges and steep stream valleys, and of villages and hamlets whose bridges, temples, verandas and barns take the flask-shaped mud nest. It hunts over fields, rice paddies, dry grassland and along streams, generally lower than the swifts it shares the air with. In its South and South-East Asian winter quarters it favours open farmland and marshes.
Where the bird is most at home, classified with EUNIS — the European standard for habitats.
Range and movements
Breeds from southern Siberia, the Altai and the Mongolian plateau into northern and central East Asia, the Korean Peninsula and the Japanese archipelago, and winters in the Indian subcontinent, South-East Asia and as far as northern Australia. That lies wholly outside the region, and European records are correspondingly exceptional. Two records come from the far north of the British Isles: an adult on Orkney in June 2011, which then reappeared on Skye, and a bird at sea off Caithness in May 2018. Because the split dates only from 2024, further records are almost certainly hidden in older sightings logged simply as Red-Rumped Swallow.
How and when to look
This is not a bird you go looking for but one you recognise. Both records fell in the late-spring window in which ordinary Red-Rumped Swallows also overshoot, late May and June, and both were on the northern isles and the north-east coast. If you meet a Red-Rumped Swallow in those weeks, photograph it from below and from behind: heavy, broad streaking reaching onto the flanks and a broad, pale, streaked rump are what the records committee will look at. Without images there is nothing to assess.
Conservation status
Not globally threatened. The Red List still assesses the Red-Rumped Swallow in the broad sense, under the name Cecropis daurica, and that assessment is Least Concern; it is that broad assessment which stands here, not a separate one for the eastern bird. Across Asia the species is common and locally increasing, as bridges, viaducts and concrete buildings provide nest sites where cliffs are absent. For the European list it is above all an identification question: the number of records depends on how consistently observers photograph a Red-Rumped Swallow in late spring.
Scientific name
Cecropis daurica | (Laxmann, 1769)
Laxmann described the species in 1769 as Hirundo daurica; because it was later moved to another genus, the author and year stand in brackets. The genus Cecropis was introduced in 1826 by Boie. Cecropis is from Ancient Greek Kekropis, 'Athenian woman'. daurica refers to Dauria, a mountainous region east of Lake Baikal in Russia. The specimen the first description was based on came from Zmeinogorsk, Siberia.