Pallid Swift
Apus pallidus
Medium-sized swift, dark overall with a white throat patch. Like Common Swift, nests in buildings and cliff faces, often in coastal regions, and forages over a wide range of habitats. Very similar to Common Swift but with slightly paler plumage overall (plumage tones of both species greatly influenced by lighting), subtly blunter wings, and less deeply forked tail. Shrill screaming call is subtly different from that of Common Swift as well: slightly deeper, and sometimes incorporating a slight “hiccup” at the end. Many dark swifts are not safely identified in the field.
Identification
This 16–17 cm (6.3–6.7 in) long species is very similar to the common swift, and separation is only possible with good views. Like its relative, it has a short forked tail and very long swept-back wings that resemble a crescent or a boomerang.<p>It is entirely dark except for a large white throat patch which is frequently visible from a distance. It is chunkier and browner than common swift, and the slightly paler flight feathers, underparts and rump give more contrast than that species. It also has a scalier looking belly and subtly different flight action. The call is a loud dry scream similar to that of its relative, though possibly more disyllabic.
Taxonomy
The pallid swift was first described by English naturalist George Ernest Shelley in 1870.
- Scientific name
- Apus pallidus
- Authority
- (Shelley, 1870)
- Order
- Apodiformes
- Family
- Apodidae
- Genus
- Apus
Range and habitat
Pallid swifts breed on cliffs and eaves around the Mediterranean and on the Canary Islands and Madeira, laying two eggs.<p>They are rare north of their breeding areas, although they are likely to be under-recorded due to identification problems. Because of its more southerly range, pallid swift arrives earlier and leaves later than the closely related common swift, so particularly early or late swifts north of the normal range should be carefully observed.<p>Like swallows, they are migratory, wintering in southern Africa or southeast Asia.<p>Pallid swifts that breed in Gibraltar have been tracked using GPS technology, and has shown them to have multiple African wintering grounds south of the Sahara at specific times of the year. One bird, tracked over two consecutive winters, showed remarkable fidelity to the areas visited in Africa between years. The study also supports previous findings of an airborne existence in swifts outside the breeding season, with two pallid swifts giving no indication of coming to land.
- Breeding range
- PAL, AF : s Europe, Arabian Pen. and n AF
- Non-breeding range
- c, w AF
- Migration
- Complete migrants
Conservation
- Population trend
- stable
Photos
Distribution
Bird Calls
Other Birds
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