Search results
Results from the WOW.Com Content Network
This category is for articles related to birds which have adapted to live within the ecological niche of caves. Pages in category "Cave birds" The following 5 pages are in this category, out of 5 total.
The cave swallow measures 12 to 14 cm in length and weighs 19 g on average. The largest of the five subspecies, P. f. pallida, has an average wing length between 107.0 and 112.3 mm; the smallest subspecies, P. f. aequatorialis, has an average wing length between 93.0 and 93.5 mm. Differences between the sexes are minimal, both are similar in size and weight and are difficult to distinguish ...
Many if not all species are colonial nesters; some build their nests in high, dark corners on cave walls. Swiftlets in temperate zones do migrate, but most Aerodramus swiftlets live in the tropical Indo-Pacific region and do not migrate. These birds usually remain in one cave or other roosting/nesting site.
The cave swiftlet is highly gregarious and flies with all the other species of swift that are sympatric with it. It often circles and flies through the branches of trees emerging through the canopy such as fruiting figs. It breeds in the lighter parts of caves, building a nest of stringy vegetation and cementing the materials to the rock with ...
The nests of Aerodramus swiftlets are constructed with saliva as a major component. In two species, saliva is the only material used, and the nests are collected for the famous Chinese delicacy 'bird's nest soup', the over-collection of which puts pressure on the swiftlet populations.
Cave birds (5 P) Pages in category "Subterranean nesting birds" The following 12 pages are in this category, out of 12 total. This list may not reflect recent changes. B.
The Indian Swiftlet or Indian Edible-Nest Swiftlet (Aerodramus unicolor) is a small swift. It is a common resident colonial breeder in the hills of Sri Lanka and south west India. The half-cup nest is built on a vertical surface, often in a cave. The male swift uses thick saliva to construct the white, shiny nest into which two eggs are laid.
The male does not participate at all. Eggs typically incubate for 27–28 days. The ideal nesting sites for this species are usually located in a cave or vertical rock face with crevices that provide some shelter and protection from the elements. The nests themselves are solid moldings formed from mud and plant material deposited into the crevices.