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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 ...
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 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 ...
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.
Oilbird videos, photos & sounds on the Internet Bird Collection; The oilbird's visual acuity; Caripe.net – La Puerta de Entrada (in Spanish) Oilbird Caves of Trinidad Accessed 30 March 2011 "Finding the cave-dwelling Oilbird!". YouTube. Toledo Zoo. August 7, 2015. Archived from the original on 2021-12-12. "Oilbird". YouTube. American Bird ...
Tits are cavity-nesting birds, typically using trees, although Pseudopodoces [12] builds a nest on the ground. Most tree-nesting tits excavate their nests, [13] and clutch sizes are generally large for altricial birds, ranging from usually two eggs in the rufous-vented tit of the Himalayas to as many as 10 to 14 in the blue tit of Europe.
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Nesting mossy-nest swiftlets. The nest of many species is glued to a vertical surface with saliva, and the genus Aerodramus use only that substance, which is the basis for bird's nest soup. Other swifts select holes and small cavities in walls. [15] The eggs hatch after 19 to 23 days, and the young leave the nest after a further six to eight weeks.