Fairy Martin
Petrochelidon ariel
Small swallow dark above, pale below, with white rump, reddish crown, and notched tail. Nests colonially over much of Australia. Unique "bottle" nests constructed from mud usually found under building eves, bridges, culverts, and cliffs. Call a dry buzzing "frrrtt," very different from twittering of Tree Martin.
Identification
The fairy martin is dumpy and square tailed. It averages 12 centimetres (4.7 in) long and weighs 11 grams (0.39 oz). The adult has an iridescent blue back, brown wings and tail, a rufous crown and nape, and a whitish rump. The underparts are dull white. The sexes are similar, but young birds are duller and browner, with a paler forehead and pale fringes to the back and wing feathers.<p>This species can be distinguished from other Australian swallows by its pale rump. The most similar species, the tree martin, has a shallowly forked tail and blue-black head and nape.<p>The call of this vocal swallow is a chrrrr and the song is a high-pitched twitter. The vocalizations are higher pitched than those of the tree martin.
Taxonomy
- Scientific name
- Petrochelidon ariel
- Authority
- (Gould, 1842)
- Order
- Passeriformes
- Family
- Hirundinidae
- Genus
- Petrochelidon
Range and habitat
- Breeding range
- AU : Australia (except Tasmania, se Australia)
- Non-breeding range
- s populations move n
- Migration
- Complete migrants
Behavior
Fairy martins breed from August through to January in colonies usually of a few tens of nests, but the largest known site had 700 nests. Nests are constructed in natural holes in dead trees, riverbanks, cliff faces or rock crevices, but increasingly in artificial sites on bridges, in culverts and pipes, and on buildings.<p>The nest is a retort- or bottle-shaped structure, made from up to a thousand mud pellets and lined with dried grasses and feathers. The bowl is about 15 centimetres (5.9 in) in diameter, and the entrance tunnel is 5–30 centimetres (2.0–11.8 in) long. The nests in a colony are clustered together. Both sexes build the nest and share incubation and care of the young.<p>The clutch is usually four, sometimes five, reddish-brown speckled white eggs, and this species is often double or triple brooded.<p>The fairy martin feeds high in the air on flying insects, usually in large flocks. Fairy martins have a slow fluttering flight and feed higher than welcome swallows. They will also feed on insect swarms low over water, and have been recorded feeding on injured moths on a newly cut lawn. This species is highly gregarious and forms large flocks, often with tree martins. When the mud nest is vacated after breeding, it may become occupied by several species of microbats. These opportunists include the wattle bats of genus Chalinolobus (Chalinolobus morio, C. dwyeri and C. gouldii), and the small long-eared bat Nyctophilus geoffroyi.
Conservation
- Population trend
- rising
Photos
Distribution
Bird Calls
Other Birds
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Lepidothrix velutina
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Oreolais pulcher
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