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Side-by-Side Comparison

属性	Pallid Swift	Plain Swift
学名	Apus pallidus	Apus unicolor
目	Caprimulgiformes	Caprimulgiformes
科	Apodidae	Apodidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	33.4 cm (13.1 in)	29.9 cm (11.8 in)
体重	42.25 g (1.49 oz)	24.2 g (0.85 oz)
食性	Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders.	Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude.
一腹卵数	1-4	2
Population Trend	—	—

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Habitat Comparison

共通生息地

🏖️ Coastal

Pallid Swift only

🌾 Grassland

Plain Swift only

🌲 Forest

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Song & Call Comparison

Pallid Swift

さえずり

Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.

Plain Swift

さえずり

Harsh, grating scream with descending inflection; loud raspy calls carrying urgency, often given during colony disturbance.

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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.

Plain Swift

Breeds on the Azores, Madeira, and Canary Islands. Resident on these Macaronesian archipelagos. Closely related to Common Swift.

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保全状況

Least Concern

Pallid Swift

Least Concern

Plain Swift

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How to Tell Them Apart

Pallid Swift

羽毛

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 …

Plain Swift

羽毛

Dark sooty-brown plumage; very faint pale chin; no distinct throat patch; entirely plain and uniform; smaller than Common Swift; Macaronesian endemic breeding in Canary Islands and Madeira; coloration slightly paler …

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About These Birds

Pallid Swift

カフリアマツバメは地中海沿岸やアフリカ北部に繁殖し、ヨーロッパアマツバメより淡い色合いが特徴的である。

Plain Swift

マデイラアマツバメは大西洋の島々とアフリカ北西部に繁殖し、黒褐色の羽毛を持つアマツバメである。

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More Birds to Explore

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