Bat-like Spinetail vs Alpine Swift

In short

The Bat-like Spinetail and the Alpine Swift are both members of the swift family, but they can be distinguished by their size and wing shape. The Bat-like Spinetail is smaller with more rounded wings, while the Alpine Swift is larger with long, pointed wings. Observing their flight patterns and habitats can also aid in identification.

Identification tips

1. Size: Look for the smaller size of the Bat-like Spinetail compared to the larger Alpine Swift. 2. Wing Shape: Note the rounded wings of the Bat-like Spinetail versus the pointed wings of the Alpine Swift. 3. Plumage: Check for the white belly and throat of the Alpine Swift. 4. Flight Pattern: Observe the erratic flight of the Bat-like Spinetail compared to the soaring flight of the Alpine Swift. 5. Habitat: Consider the habitat; Bat-like Spinetails are more likely in lowland forests, while Alpine Swifts are in mountainous areas.

Size

The Bat-like Spinetail is significantly smaller than the Alpine Swift. The Alpine Swift is one of the largest swifts, making size a reliable field mark.

Plumage

Both species have similar dark plumage, but the Alpine Swift often shows a contrasting white belly and throat, which the Bat-like Spinetail lacks.

Behaviour

The Bat-like Spinetail exhibits a more erratic, bat-like flight pattern, while the Alpine Swift has a more direct and powerful flight. The Alpine Swift often soars at higher altitudes.

Habitat

The Bat-like Spinetail is typically found in lowland forests and near water bodies, whereas the Alpine Swift is more often seen in mountainous regions and open skies.

Voice

Vocalizations are not a primary distinguishing feature between these species in the field.