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Aves can mean the last common ancestor of all the currently living birds and all of its descendants (a "crown group", in this sense synonymous with Neornithes) Under the fourth definition Archaeopteryx , traditionally considered one of the earliest members of Aves, is removed from this group, becoming a non-avian dinosaur instead.
List of bird genera concerns the chordata class of aves or birds, characterised by feathers, a beak with no teeth, the laying of hard-shelled eggs, and a high metabolic rate. Restless flycatcher in the downstroke of flapping flight
The species was discovered by Spanish zoologist Fermín Zanón Cervera in March 1927 in the Zapata ... Class Aves, divided into superorders, orders, suborders ...
The classification appears to be an early example of cladistic classification [clarification needed] because it codifies many intermediate levels of taxa: the "trunk" of the family tree is the class Aves, which branches into subclasses, which branch into infraclasses, and then "parvclasses", superorders, orders, suborders, infraorders, "parvorders", superfamilies, families, subfamilies, tribes ...
The basal bird Archaeopteryx, from the Jurassic, is well known as one of the first "missing links" to be found in support of evolution in the late 19th century. Though it is not considered a direct ancestor of modern birds, it gives a fair representation of how flight evolved and how the very first bird might have looked.
Neoaves is a clade that consists of all modern birds (Neornithes or Aves) with the exception of Palaeognathae (ratites and kin) and Galloanserae (ducks, chickens and kin). [4] This group is defined in the PhyloCode by George Sangster and colleagues in 2022 as "the most inclusive crown clade containing Passer domesticus, but not Gallus gallus". [5]
Image Scientific name Common Name Distribution Agelaius phoeniceus: Red-winged blackbird: North and much of Central America Agelaius assimilis: Red-shouldered blackbird
The Gruiformes (/ ˈ ɡ r uː ɪ f ɔːr m iː z / GROO-ih-for-meez) [citation needed] are an order containing a considerable number of living and extinct bird families, with a widespread geographical diversity.