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The eyes of many birds have two foveae (the fovea is the area of the retina with the greatest density of light receptors), [22] and a kingfisher can switch from the main central fovea to the auxiliary fovea when it enters water; a retinal streak of high receptor density which connects the two foveae allows the image to swing temporally as the ...
The largest kingfisher in Africa is the giant kingfisher (Megaceryle maxima), which is 42 to 46 cm (17 to 18 in) in length and 255–426 g (9.0–15.0 oz) in weight. [17] The common Australian kingfisher, known as the laughing kookaburra (Dacelo novaeguineae), is the heaviest species, with females reaching nearly 500 g (18 oz) in weight. [18]
The white-throated kingfisher is a common species in a variety of habitats, mostly open country in the plains (but has been seen at 7500 ft in the Himalayas [18]) with trees, wires or other perches. The range of the species is expanding. This kingfisher is widespread and populations are not threatened.
The belted kingfisher is a stocky, medium-sized bird that measures between 28–35 cm (11–14 in) in length with a wingspan of between 48–58 cm (19–23 in). This kingfisher can weigh from 113 to 178 g (4.0 to 6.3 oz). [6] [7] The adult female averages slightly larger than the adult male. This species has a large head with a shaggy crest ...
The forest kingfisher (Todiramphus macleayii), also known as Macleay's or the blue kingfisher, is a species of kingfisher in the subfamily Halcyoninae, also known as tree kingfishers. It is a predominantly blue and white bird. It is found in Indonesia, New Guinea and coastal eastern and Northern Australia. Like many other kingfishers, it hunts ...
The name Dacelo is an anagram of alcedo, the Latin word for a kingfisher. [7] A molecular study published in 2017 found that the genus Dacelo , as then defined, was paraphyletic . The shovel-billed kookaburra was previously classified in the monotypic genus Clytoceyx , but was reclassified into Dacelo based on phylogenetic evidence.
A clade containing four species were placed in the resurrected genus Corythornis and five species (little kingfisher, azure kingfisher, Bismarck kingfisher, silvery kingfisher and indigo-banded kingfisher) were moved from Alcedo to Ceyx. [3] All except one of the kingfishers in the reconstituted Ceyx have three rather than the usual four toes.
The pied kingfisher (Ceryle rudis) is a species of water kingfisher widely distributed across Africa and Asia. Originally described by Carl Linnaeus in 1758, it has five recognised subspecies. Its black and white plumage and crest, as well as its habit of hovering over clear lakes and rivers before diving for fish, make it distinctive.
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