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All About Birds: Eagle (The Cornell Lab of Ornithology)
Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
bird : any of a class (Aves) of warm-blooded vertebrates distinguished by having the body more or less completely covered with feathers and the forelimbs modified as wings — Webster
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the 5 cm (2 in) bee hummingbird to the 2.75 m (9 ft) ostrich. They rank as the world’s most numerically-successful class of tetrapods, with approximately ten thousand living species, more than half of these being passerines, sometimes known as perching birds. Birds have wings which are more or less developed depending on the species; the only known groups without wings are the extinct moa and elephant birds. Wings, which evolved from forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in flightless birds, including ratites, penguins, and diverse endemic island species of birds. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. — Wikipedia
Ornithology is a branch of zoology that concerns the study of birds. Several aspects of ornithology differ from related disciplines, due partly to the high visibility and the aesthetic appeal of birds. Most marked among these is the extent of studies undertaken by amateurs working within the parameters of strict scientific methodology.
The science of ornithology has a long history and studies on birds have helped develop several key concepts in evolution, behavior and ecology such as the definition of species, the process of speciation, instinct, learning, ecological niches, guilds, island biogeography, phylogeography, and conservation. While early ornithology was principally concerned with descriptions and distributions of species, ornithologists today seek answers to very specific questions, often using birds as models to test hypotheses or predictions based on theories. — Wikipedia
Birds News -- ScienceDaily Bird news and research. From chickens to birds of prey, wing design to migration, read all the latest news on birds.
The surprising organization of avian brains
on September 25, 2020 at 3:33 pm
Some birds can perform amazing cognitive feats - even though their forebrains seem to just consist of lumps of grey cells, while mammalian forebrains harbour a highly complex neocortex. A study reveals for the first time amazing similarities between the neocortex of mammals and sensory brain areas of birds: both are arranged in horizontal layers and vertical columns.
Wild birds as offerings to the Egyptian gods
on September 22, 2020 at 3:22 pm
Millions of mummified ibis and birds of prey, sacrificed to the Egyptian gods Horus, Ra or Thoth, have been discovered in the necropolises of the Nile Valley. Such a quantity of mummified birds raises the question of their origin: were they bred, like cats, or were they hunted? According to a team of scientists that carried out extensive geochemical analyses on mummies, they were wild birds.
Warming ocean, old-forest loss put a squeeze on...
on September 22, 2020 at 1:21 pm
Squeezed by changing ocean conditions that limit their food options and the long-term loss of old forest needed for nesting, marbled murrelets would benefit most from conservation efforts that take both ocean and forest into account, new research shows.
Epigenetics linked to genetic differences between...
on September 21, 2020 at 3:16 pm
Some of the genetic differences that have arisen between domesticated chickens and their wild ancestors, the red junglefowl, are linked to epigenetic changes, according to a new study. Scientists have discovered a small number of 'hotspots' in the DNA that control epigenetic changes at hundreds of other locations throughout the genome.
Bird beak revealed by laser imaging informs early...
on September 21, 2020 at 2:25 pm
Confuciusornis was a crow-like fossil bird that lived in the Cretaceous ~120 million years ago. It was one of the first birds to evolve a beak. Early beak evolution remains understudied. Using an imaging technique called Laser-Stimulated Fluorescence, researchers address this by revealing just how different the beak and jaw of Confuciusornis were compared to birds we see today.
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
Bird genes are multitaskers, say scientists
on September 25, 2020 at 9:00 pm
Scientists from the University of Sheffield have found that although male and female birds have an almost identical set of genes, they function differently in each sex through a mechanism called alternative splicing.
New marine protected areas connect hundreds of...
on September 25, 2020 at 5:22 pm
Three hundred and fifty square kilometers of Turkey's coastline has been brought under environmental protection in a recent announcement by the Turkish government. This new area represents a significant expansion of the existing marine protected area network along the country's Mediterranean coast and firmly establishes Turkey as a leader in marine conservation in the most overfished sea on the planet.
Solution to water shortages: Reuse of sewage for...
on September 25, 2020 at 1:18 pm
Globally, there is an imbalance between water availability and water demand. The main cause of this mismatch is agricultural irrigation, which accounts for about 70% of freshwater withdrawal. At the same time, wastewater treatment plants discharge large volumes of water that diminish the quality of the limited freshwater resources. A new study by a diverse team of experts, including researchers from the University of Amsterdam, shows that reusing treated domestic wastewater through groundwater […]
The surprising organisation of avian brains
on September 25, 2020 at 1:17 pm
Birds and mammals have the largest brains in relation to their body. Apart from that, however, they have little in common, according to scientific opinion since the 19th century: mammalian brains have a neocortex, i.e. a cerebral cortex that's made up of six layers and arranged in columns perpendicular to these layers. Avian brains, on the other hand, look like clumps of gray cells.
Research finds mouse populations can be...
on September 25, 2020 at 12:09 pm
Good news for Western Australian wildlife with a recent study suggesting that mice numbers could be controlled with much smaller doses of poison.