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  • California condor - Wikipedia
    The California condor (Gymnogyps californianus) is a New World vulture and the largest North American land bird It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah (including the Grand Canyon area and Zion National Park), the coastal mountains of California, and northern Baja California
  • 6 Basic Animal Groups - ThoughtCo
    Today they are by far the most prolific flying vertebrates, numbering 10,000 species across 30 separate orders Birds are characterized by their coats of feathers, their warm-blooded metabolisms, their memorable songs (at least in certain species), and their ability to adapt to a wide range of habitats
  • Bird Evolution - Advanced - CK12-Foundation
    The origin of bird flight is a separate, but related, question to the origin of birds, and there are several proposed answers Most birds can fly, which distinguishes them from almost all other vertebrates Flight is used by modern birds as a means of locomotion, feeding, and avoiding and escaping predators
  • Statistical Properties of Pairwise Distances between Leaves . . .
    Often, in biological context, one does not have an access to data about all existing species (i e leaves of a phylogenetic tree) Instead, species are incompletely sampled, or might have been subject to a recent massive extinction event As long as the extinction of species is random, both scenarios are equivalent on macroevolutionary
  • Quail | Characteristics, Diet, Size, Facts | Britannica
    quail, any of roughly 130 species of small short-tailed game birds classified in the families Phasianidae and Odontophoridae (order Galliformes), resembling partridges but generally smaller and less robust The 95 species of Old World quail are classified in Phasianidae in either of two subfamilies, Phasianinae or Perdicinae
  • How birds became birds - Science
    The photos showed a small dinosaur without wings or other bird characters, but covered with a fuzz of feathers This was the beginning of a flood of Chinese theropod fossils with feathers of all kinds, from simple bristles through branched down feathers to fully elaborated flight-type feathers (2, 3) Some theropod dinosaurs even had extended





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