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Flightless birds are birds that cannot fly, as they have, through evolution, lost the ability to. [1] There are over 60 extant species, [2] including the well-known ratites (ostriches, emus, cassowaries, rheas, and kiwis) and penguins. The smallest flightless bird is the Inaccessible Island rail (length 12.5 cm, weight 34.7
Pages in category "Flightless birds" The following 52 pages are in this category, out of 52 total. This list may not reflect recent changes. ...
Cariamiformes (or Cariamae) is an order of primarily flightless birds that has existed for over 50 million years. The group includes the family Cariamidae (seriemas) and the extinct families such as Phorusrhacidae, Bathornithidae, Idiornithidae and Ameghinornithidae.
Kiwi (/ ˈ k iː w iː / KEE-wee) [4] are flightless birds endemic to New Zealand of the order Apterygiformes.The five extant species fall into the family Apterygidae (/ ˌ æ p t ə ˈ r ɪ dʒ ə d iː /) and genus Apteryx (/ ˈ æ p t ər ɪ k s /). [5]
Ostriches are large flightless birds. Two living species are recognised, the common ostrich , native to large areas of sub-Saharan Africa , and the Somali ostrich , native to the Horn of Africa . They are the heaviest and largest living birds, with adult common ostriches weighing anywhere between 63.5 and 145 kilograms and laying the largest ...
The Inaccessible Island rail, or Inaccessible rail (Laterallus rogersi) is a small bird species of the rail family, Rallidae. Endemic to Inaccessible Island in the Tristan Archipelago in the isolated south Atlantic, it is the smallest extant flightless bird in the world.
Gastornis is an extinct genus of large, flightless birds that lived during the mid-Paleocene to mid-Eocene epochs of the Paleogene period. Most fossils have been found in Europe, and some species typically referred to the genus are known from North America and Asia.
Genyornis newtoni is an extinct species of large, flightless bird that lived in Australia during the Pleistocene Epoch until around 50,000 years ago. Over two metres in height, they were likely herbivorous. [2]