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The evolution of birds began in the Jurassic Period, with the earliest birds derived from a clade of theropod dinosaurs named Paraves. [1] 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.
Domestication has been defined as "a sustained multi-generational, mutualistic relationship in which one organism assumes a significant degree of influence over the reproduction and care of another organism in order to secure a more predictable supply of a resource of interest, and through which the partner organism gains advantage over individuals that remain outside this relationship ...
A turning point came in the early twentieth century with the writings of Gerhard Heilmann of Denmark.An artist by trade, Heilmann had a scholarly interest in birds and from 1913 to 1916, expanding on earlier work by Othenio Abel, [12] published the results of his research in several parts, dealing with the anatomy, embryology, behavior, paleontology, and evolution of birds. [13]
[3] [115] [116] The 9,500 YBP Zhokhov dog is more closely related to a 6,000 YBP dog from Lake Baikal than related to the ancient dogs found in North America, which supports that a genetic split had occurred between the early Arctic and North American dogs and that their common ancestor dates much older than the 9,500 YBP Zhokhov dog [115] The ...
Short-faced bears vanish from North America, with the last giant ground sloths dying out. All Equidae become extinct in North America. Domestication of various ungulates. 10 ka Holocene epoch starts [106] after the Last Glacial Maximum.
The shared history of birds and dinosaurs is well-established, but exactly how true birds evolved during the Mesozoic is a bit of a mystery. Adding to this conundrum are fossilized footprints of ...
Around 5 million years ago, some of the Old World Eucyon evolved into the first members of Canis, [13] In the Pliocene, around 4–5 Mya, Canis lepophagus appeared in North America. This was small and sometimes coyote-like. Others were wolf-like. C. latrans (the coyote) is theorized to descend from C. lepophagus. [14]
Park Ranger Jesse A. Anderson uses an app on his phone to try and call in birds while leading a small group on the Third Wednesday Bird Walk at Carolina Beach State Park Dec. 20, 2023.