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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]
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.
In birds, the main arteries taking blood away from the heart originate from the right aortic arch (or pharyngeal arch), unlike in the mammals where the left aortic arch forms this part of the aorta. [77]
Guineafowl (/ ˈ ɡ ɪ n i f aʊ l /) (or guineahen) are birds of the family Numididae in the order Galliformes. They are endemic to Africa and rank among the oldest of the gallinaceous birds. Phylogenetically, they branched off from the core Galliformes after the Cracidae (chachalacas, guans, and curassows) and before the Odontophoridae (New ...
Turkey Temporal range: 23–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N Early Miocene – Recent A male wild turkey strutting Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Aves Order: Galliformes Family: Phasianidae Subfamily: Phasianinae Tribe: Tetraonini Genus: Meleagris Linnaeus, 1758 Type species Meleagris gallopavo (wild turkey) Linnaeus, 1758 Species M ...
A white canary nesting Feral yellow canary at Midway Atoll Red factor canary Sleeping canary. Domestic canaries are generally divided into three main groups: Colour-bred canaries (bred for their many colour mutations – Ino, Eumo, Satinette, Bronze, Ivory, Onyx, Mosaic, Brown, red factor, Green (Wild Type): darkest black and brown melanin shade in yellow ground birds, Yellow Melanin: mutation ...
Subfossil remains and remnants of the birds that were brought to Europe in the 17th century show that dodos were very large birds, measuring about 62.6–75 cm (24.6–29.5 in) in height. [42] [43] The bird was sexually dimorphic; males were larger and had proportionally longer beaks. Weight estimates have varied from study to study.
The chicken (Gallus gallus domesticus) is a large and round short-winged bird, domesticated from the red junglefowl of Southeast Asia around 8,000 years ago. Most chickens are raised for food, providing meat and eggs; others are kept as pets [1] or for cockfighting.