The evolution of birds began in the jurassic period with the earliest birds derived from a clade of theropoda dinosaurs named paraves birds are categorized as a biological class aves for more than a century the small theropod dinosaur archaeopteryx lithographica from the late jurassic period was considered to have been the earliest bird. A history of british birds is a natural history book by thomas bewick published in two volumes volume 1 land birds appeared in 1797 volume 2 water birds appeared in 1804 a supplement was published in 1821 the text in land birds was written by ralph beilby while bewick took over the text for the second volume. The evolutionary history of birds experienced a new beginning when the main predators and competitors of birds dinosaurs and pterosaurs flying reptiles went extinct leaving the skies wide open today birds are a major source of food for carnivorous or omnivorous mammals like felines and humans. While at the museum cory produced the birds of illinois and wisconsin 1909 and began the series catalogue of birds of the americas and the adjacent islands in field museum of natural history completing the first two volumes on his own cory 1918 1919 at his death he left manuscripts for three additional volumes which were completed by c . Buy the bird a natural history of who birds are where they came from and how they live on amazoncom free shipping on qualified orders
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