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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.
Modern birds would have expanded from West Gondwana through two routes. One route was an Antarctic interchange in the Paleogene. The other route was probably via Paleocene land bridges between South America and North America, which allowed for the rapid expansion and diversification of Neornithes into the Holarctic and Paleotropics. [4]
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]
1933 – Nagamichi Kuroda publishes Birds of the Island of Java (2 Volumes, 1933–36). 1934 – Roger Tory Peterson publishes his Guide to the Birds, the first modern field guide. 1934–37 – Brian Roberts is the expedition ornithologist on John Rymill's British Graham Land Expedition (BGLE).
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]
Pitman also noted that the 2023 banding season marked the most birds ever recorded at JIBS—1,750 individuals representing 57 different species.
Transition to the Twentieth Century: Thomas County, Georgia, 1900–1920 2002. vol 4 of comprehensive history of one county. Scott, Thomas Allan. Cobb County, Georgia, and the Origin of the Suburban South: A Twentieth Century History (2003). Werner, Randolph D. "The New South Creed and the Limits of Radicalism: Augusta, Georgia, before the 1890s."
The brown thrasher is the state bird of Georgia. This list of birds of Georgia includes species documented in the U.S. state of Georgia and accepted by the Checklist and Records Committee of the Georgia Ornithological Society (GOSRC). As of August 2020, there are 427 species definitively included in the official list.