Pallid Swift vs White-fronted Swift
Apus pallidus comparado con Cypseloides storeri
Side-by-Side Comparison
| Atributo | Pallid Swift | White-fronted Swift |
|---|---|---|
| Nombre científico | Apus pallidus | Cypseloides storeri |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Data Deficient |
| Longitud | — | — |
| Envergadura | 33,4 cm (13.1 in) | 27,4 cm (10.8 in) |
| Peso | 42,25 g (1.49 oz) | 39,25 g (1.38 oz) |
| Dieta | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Obligate aerial insectivore; takes small flies, beetles, and aerial spiders in swooping fast-flight passes. |
| Tamaño de la puesta | 1-4 | -- |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Ninguno
Pallid Swift only
White-fronted Swift only
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
White-fronted Swift
Poorly known vocalizations; thin twittering presumed; calls over Mexican montane waterfalls; high-pitched soft chip notes; very rarely documented; data-deficient 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.
White-fronted Swift
Endemic to western Mexico from Jalisco to Oaxaca. Resident in forested highlands near canyon streams at 1,000–2,500 m. Poorly known.
Estado de conservación
Pallid Swift
White-fronted Swift
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 …
White-fronted Swift
Blackish-brown throughout with a prominent white frontal patch on forehead and lores; no other pale markings; slightly paler brownish below; poorly known Mexican endemic known from very few specimens.
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.
White-fronted Swift
A medium-sized swift (14 cm) endemic to montane forests of western Mexico at 1,500-3,000 m elevation. Sooty-black plumage with a white forehead patch. Aerial insectivore feeding over forested mountainsides. One of the least known Neotropical swifts. Classified as Vulnerable.