Pallid Swift vs Tenggara Swiftlet
Apus pallidus so với Collocalia sumbawae
Side-by-Side Comparison
| Thuộc Tính | Pallid Swift | Tenggara Swiftlet |
|---|---|---|
| Tên Khoa Học | Apus pallidus | Collocalia sumbawae |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 33,4 cm (13.1 in) | — |
| Khối Lượng | 42,25 g (1.49 oz) | 5,9 g (0.21 oz) |
| Chế Độ Ăn | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Aerial plankton specialist catching tiny flies, gnats, and airborne spiders in tight acrobatic flight. |
| Số Trứng | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Tenggara Swiftlet
Very high thin twittering; rapid 'tsit' notes over Sumbawa; echolocation clicks used in limestone caves; call among the highest frequency of any swiftlet species
Geographic Range & Migration
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
Tenggara Swiftlet
Endemic to the Lesser Sundas of Indonesia including Sumbawa, Flores, and Timor. Resident in open forest and savanna at low elevations.
Tình Trạng Bảo Tồn
Pallid Swift
Tenggara Swiftlet
How to Tell Them Apart
Pallid Swift
Medium-large; pale brownish-grey overall, distinctly paler than Common Swift; larger pale throat patch; wing coverts show pale scaly edges; Mediterranean and Middle Eastern species; pale sandy-brown tone separates it from …
Tenggara Swiftlet
Tiny; dark blue-black upperparts with green gloss; pale whitish-buff rump band; dark sooty-grey underparts; Lesser Sunda Islands endemic; extremely similar to Glossy Swiftlet but restricted to eastern Indonesian islands.
About These Birds
Pallid Swift
A medium-sized swift (16-17 cm) similar to Common Swift but paler, sandy-brown overall with a larger white throat patch. Found across southern Europe, North Africa, and the Middle East. Aerial insectivore. Long-distance migrant wintering in sub-Saharan Africa and South Asia.
Tenggara Swiftlet
A small swiftlet (9-10 cm) endemic to the Lesser Sunda Islands (Sumbawa, Flores, Sumba) of Indonesia. Dark glossy plumage. Aerial insectivore, foraging over forest and open areas. Colonial cave nester. Limited ecological data; restricted island range.