Birds (class Aves) are a clade of endothermic, egg-laying vertebrates characterized by feathers, toothless beaked jaws, a lightweight but strong skeleton with pneumatic bones, and forelimbs modified as wings. They possess a highly efficient respiratory system with air sacs and unidirectional airflow, a four-chambered heart, and high metabolic rates supporting sustained activity and, in most species, powered flight. Reproduction is oviparous with hard-shelled, calcium-rich eggs and extensive parental care. Birds exhibit diverse morphologies and ecological strategies, yet share key synapomorphies such as feathers and a furcula, reflecting their origin within theropod dinosaurs.
Imagine you're driving down a winding road when you spot an injured possum. Your instincts might tell you to hit the brakes, check what's wrong and bundle it into your car. Research shows many of us want to help wild animals ...
Ecology
6 hours ago
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The number of chicks in the Coulman Island emperor penguin colony decreased by about 69% in 2025 compared with 2024, according to research published in Communications Earth & Environment. The authors suggest that a large ...
Plants & Animals
19 hours ago
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Every year, billions of migratory birds connect the world's continents, oceans and ecosystems as they undertake epic journeys between their foraging habitats and breeding grounds.
Ecology
Jul 23, 2026
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Scientists have known for years that birds like geese and ibises gain an aerodynamic advantage from flying in a "V" formation. Now, researchers from Brown University have provided new insights into the nature of that advantage.
Plants & Animals
Jul 21, 2026
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The U.S. Fish and Wildlife Service announced the reclassification of the Aʻeo, or Hawaiian stilt (Himantopus mexicanus knudseni), from endangered to threatened under the Endangered Species Act, a rare and hopeful milestone ...
Plants & Animals
Jul 21, 2026
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On a pristine Rhode Island beach teeming with noisy seabirds, a group of biologists armed with nets sneak up on a pair of American oystercatcher chicks.
Ecology
Jul 20, 2026
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University of Michigan researchers have used an AI tool to demonstrate that birds in the group Passeriformes evolved in rapid evolutionary bursts and that these bursts frequently coincided with climate shifts throughout Earth's ...
Evolution
Jul 20, 2026
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If you've driven down two-lane highways in rural parts of North Florida recently, you may have noticed a spate of new signs that designate the grassy knolls bordering the asphalt as wildflower areas. The signs likely feel ...
Plants & Animals
Jul 18, 2026
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Europe's great cormorant has recovered from near extinction to overabundance in half a century, stoking a long-running debate over population control between fishers troubled by its voracious appetite and conservationists.
Ecology
Jul 18, 2026
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Mosquitoes are widely known for transmitting diseases such as malaria and dengue fever to humans, but less is known about the diseases they can transmit to wild birds. The Plasmodium parasite that causes avian malaria is ...
Ecology
Jul 17, 2026
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