Collocalia linchi Horsfield & F.Moore, 1854

Upperpart Coloration

This bird species, the cave swiftlet (Collocalia linchi), has shiny blackish-brown upperparts including the rump, with a greenish gloss; it sometimes appears black and hooded.

Underpart Coloration

Its chest is black, while the belly to flanks are pale grey with fine black speckles along the margins.

Wing and Tail Morphology

It has rounded wing tips, a black underwing, and a black, rounded tail with a shallow notch.

Distinction from Glossy Swiftlet (Tail)

Unlike the very similar glossy swiftlet (Collocalia esculenta), this species lacks the white specks found on the tail of the glossy swiftlet.

Distinction from Glossy Swiftlet (Hind Toe)

A key distinguishing feature between the two species is that the glossy swiftlet has a feather tuft on its hind toe, while the cave swiftlet has a naked hind toe.

Size and Vocalization

It measures 9 to 11.5 cm (3.5 to 4.5 in) in total length, and its call is a high-pitched "cheer-cheer".

Native Range

The cave swiftlet is native to Malaysia and Indonesia, occurring across the Sundaic region.

Confirmed Distribution Locations

Confirmed populations are found on Java, Madura Island, Bawean, Kangean Island, Nusa Penida, Bali, Lombok, parts of Sumatra, and on the western slopes of Mount Kinabalu in Sabah, Borneo.

Malaysia Occurrence Record

The only evidence of its occurrence in Malaysia comes from a single specimen held at the British Museum that is labelled "Molacca".

Natural Habitat

Its natural habitat includes lowland and upland forest, as well as open woodland.