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'Big Bang' Of Bird Evolution Mapped: Genes Reveal Deep Histories Of ...
The first findings of the Avian Phylogenomics Consortium are being reported nearly simultaneously in 29 papers -- eight papers in a Dec. 12 special issue of Science and 21 more in Genome Biology, GigaScience and other journals. The analyses suggest some remarkable new ideas about bird evolution, including insights into vocal learning and the brain, colored plumage, sex chromosomes and the birds' relationship to dinosaurs and crocodiles. Dec 11, 2014 ... Six other papers in the special issue of Science describe how vocal learning may have independently evolved in a few bird groups and in the ... [ReadMore..]
Cretaceous Bird With Dinosaur Skull Sheds Light On Avian Cranial ...
Jun 23, 2021 ... Our understanding of evolutionary assembly of the modern form and function of avian cranium has been impeded by the rarity of early bird fossils ... [ReadMore..]
Earliest Beginnings Of Bird Evolution Brought Into Focus With New ...
The massive meteor strike that wiped out the dinosaurs 65 million years ago may have sparked a rapid evolution of bird species over just a few million years. The few bird lineages that survived the extinction bottleneck gave rise to stunning diversity, resulting in the more than 10,000 species alive Oct 5, 2015 ... The massive meteor strike that wiped out the dinosaurs 65 million years ago may have sparked a rapid evolution of bird species over just a ... [ReadMore..]
Bird Neurocranial And Body Mass Evolution Across The End ...
Ecological or sensory system shifts associated with brain shape and size change may have contributed to unique avian survivorship. Bird neurocranial and body mass evolution across the end-Cretaceous mass extinction: The avian brain shape left other dinosaurs behind. [ReadMore..]
A Passerine Bird's Evolution Corroborates The Geologic History Of ...
New Guinea is a biologically diverse island, with a unique geologic history and topography that has likely played a role in the evolution of species. Few island-wide studies, however, have examined the phylogeographic history of lowland species. The objective of this study was to examine patterns of phylogeographic variation of a common and widespread New Guinean bird species (Colluricincla megarhyncha). Specifically, we test the mechanisms hypothesized to cause geographic and genetic variation (e.g., vicariance, isolation by distance and founder-effect with dispersal). To accomplish this, we surveyed three regions of the mitochondrial genome and a nuclear intron and assessed differences among 23 of the 30 described subspecies from throughout their range. We found support for eight highly divergent lineages within C. megarhyncha. Genetic lineages were found within continuous lowland habitat or on smaller islands, but all individuals within clades were not necessarily structured by predicted biogeographic barr May 6, 2011 ... New Guinea is a biologically diverse island, with a unique geologic history and topography that has likely played a role in the evolution of ... [ReadMore..]
Predictable Evolution Toward Flightlessness In Volant Island Birds ...
Predictable evolutionary trends illuminate mechanisms that affect the diversity of traits and species on the tree of life. We show that when birds col... Apr 11, 2016 ... We found that island bird species have evolved smaller flight muscles than their continental relatives. Furthermore, in 366 populations of ... [ReadMore..]
Bird Evolution In Asia Shaped In Part By Giant Plateau, Study Finds ...
A new large-scale study from CU Boulder and colleagues provides first evidence that a gargantuan, inhospitable plateau in Asia maintains the species barriers of some birds Nov 20, 2019 ... A new large-scale study from CU Boulder and colleagues provides first evidence that a gargantuan, inhospitable plateau in Asia maintains the ... [ReadMore..]
Evolution Of Birds - Wikipedia
Four distinct lineages of bird survived the Cretaceous–Paleogene extinction event 66 million years ago, giving rise to ostriches and relatives (Paleognathae), ... [ReadMore..]
Humans May Be Influencing Bird Evolution In Their Backyards ...
Great tits in the U.K. have developed longer beaks, possibly to gain access to bird feeders Oct 19, 2017 ... Evolution is one of nature's greatest shows. From humble beginnings, it gave rise to fish, reptiles, amphibians, birds and mammals; ... [ReadMore..]
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How Dinosaurs Shrank And Became Birds - Scientific American
Modern birds appeared to emerge in a snap of evolutionary time. But new research illuminates the long series of evolutionary changes that made the transformation possible Jun 12, 2015 ... “A bird didn't just evolve from a T. rex overnight, but rather the classic features of birds evolved one by one; first bipedal locomotion, then ... [ReadMore..]
The Origin And Diversification Of Birds - ScienceDirect
Birds are one of the most recognizable and diverse groups of modern vertebrates. Over the past two decades, a wealth of new fossil discoveries and phy… Oct 5, 2015 ... Birds evolved from theropod dinosaurs during the Jurassic (around 165–150 million years ago) and their classic small, lightweight, feathered, ... [ReadMore..]
