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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.
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 ...
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 kagu possesses 'nasal corns', structures covering its nostrils, which are a feature not shared by any other bird. This bird is a juvenile, lacking the brightly coloured bill of the adult. The kagu is a ground-living bird, 55 cm (21 + 1 ⁄ 2 in) in length. The weight can vary considerably by individual and by season, ranging from 700 to ...
The birds are best known for building massive nest mounds of decaying vegetation, which the male attends, adding or removing litter to regulate the internal heat while the eggs develop. However, some bury their eggs in other ways; there are burrow-nesters which use geothermal heat, and others which simply rely on the heat of the sun warming the ...
The huia had no fear of people; females allowed themselves to be handled on the nest, [12] and birds could easily be captured by hand. [ 15 ] Little is known about the huia's reproduction, as only two eggs and four nests were ever described. [ 19 ]