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
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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.
- Chinese penduline tit buries eggs to prevent them...on May 16, 2022 at 4:38 pm
Many animal species bury their eggs, for a number of different reasons. While it is firmly established that Eurasian penduline tits bury them because of sexual conflict, their Chinese counterparts seem to have an entirely different reason. Experimental manipulations show that for these birds burial prevents the eggs from falling out of the nest in strong winds.
- Not all is rosy for the pink pigeonon May 13, 2022 at 1:05 am
The authors of a major study on the once critically endangered pink pigeon say boosting the species' numbers is not enough to save it from extinction in the future. Despite the population increase, the team's analysis shows the pink pigeon has a high genetic load of bad mutations, which puts it at considerable risk of extinction in the wild within 100 years without continued conservation actions.
- Structure of 'gliding bird' plant protein could...on May 11, 2022 at 4:35 pm
When pathogens attack, the NPR1 protein steps in to control a plant's immune response. Scientists have now figured out what the protein looks like and how it works --- a possible boon for agriculture.
- Wildlife: What makes some animals more afraid of...on May 10, 2022 at 6:03 pm
Humans are undoubtedly altering the natural environment. But how wild animals respond to these changes is complex and unclear. Scientists have now discovered significant differences in how the brain works in two distinct personality types: those who act fearless and those who seem afraid of new things. Being fearless can help wildlife, specifically birds, find new food sources, explore new nesting areas and help them adapt to changes in their environment; but being afraid can also help protect […]
- Global bird populations steadily decliningon May 5, 2022 at 3:46 pm
Staggering declines in bird populations are taking place around the world. So concludes a study from scientists at multiple institutions. Loss and degradation of natural habitats and direct overexploitation of many species are cited as the key threats to avian biodiversity. Climate change is identified as an emerging driver of bird population declines.
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- Could we learn to love slugs and snails in our...on May 13, 2022 at 3:13 pm
Before you squash or poison the next slug or snail you see in your garden, consider this: The British Royal Horticultural Society no longer classifies these gastropods as pests. Why on earth would a leading gardening organization do that, you might wonder. After all, slugs and snails are usually seen as a problem, given their eagerness to devour the plants you've lovingly nurtured.
- Pink pigeons in Mauritius made a remarkable...on May 13, 2022 at 3:07 pm
In the 1980s there were just ten or so pink pigeons left in the wild. Known to scientists as Nesoenas mayeri, the species is found only on Mauritius, the Indian Ocean island that was once home to the dodo. Like the dodo, the pink pigeon made an easy target for cats, rats and other predators introduced by humans, who also chopped down almost all of their native forest. Unlike the dodo, however, the pink pigeon has since made a remarkable recovery.
- No sea serpents, mobsters but Tahoe trash divers...on May 13, 2022 at 8:28 am
They found no trace of a mythical sea monster, no sign of mobsters in concrete shoes or long-lost treasure chests.
- Not all is rosy for the pink pigeon, study findson May 12, 2022 at 11:00 pm
The authors of a major study on the once critically endangered pink pigeon say boosting the species' numbers is not enough to save it from extinction in the future.
- Bracing for her future: Human medicine rescues...on May 12, 2022 at 9:39 pm
Over the past three decades Ara Mirzaian has fitted braces for everyone from Paralympians to children with scoliosis. But Msituni was a patient like none other—a newborn giraffe.
Here are links to pages about closely related subjects.
Life Cell, Gene, Tree of Life
Plant Flower, Tree
Invertebrate Cuttlefish, 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