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This article describes bird species discovered since 1900. Before the 20th century, and into its early decades, the pace of discovery (and "discovery") of new species was fast; during this period, with numerous collecting expeditions into species-rich areas not previously visited by western ornithologists, up to several hundred new species per ...
The relationships of these ancient birds are often hard to determine, as many are known only from very fragmentary remains and complete fossilization precludes analysis of information from DNA, RNA or protein sequencing. Extinct bird species differed from still-existing birds by being larger, mostly restricted to islands, and often flightless ...
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 this list of birds by common name 11,278 extant and recently extinct (since 1500) bird species are recognised. [1] Species marked with a "†" are extinct.
Known scientifically as Ardea humbloti, the Madagascar heron was added to the red list in 2016 following a review of the population’s size at the time. A team assessed the species for inclusion ...
According to some estimates, modern birds (Neornithes) evolved in the Late Cretaceous or between the Early and Late Cretaceous (100 Ma) and diversified dramatically around the time of the Cretaceous–Paleogene extinction event 66 million years ago, which killed off the pterosaurs and all non-ornithuran dinosaurs. [7] [8]
These unique structures range in size and complexity, depending on the species and the individual bird. As males gain experience, they refine their techniques. Older males typically have more ...
Vegavis is a fossil bird from the Maastrichtian stage of Late Cretaceous Antarctica. Vegavis is most closely related to true ducks. Because virtually all phylogenetic analyses predict that ducks diverged after paleognaths, this is evidence that paleognaths had already arisen well before that time. [15]