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.
As bees and hummingbirds flit from flower to flower, greedily sipping nectar in exchange for pollination, the animals often get another treat: alcohol. In the first broad analysis of the alcohol content of flower nectars, ...
Plants & Animals
Mar 25, 2026
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To protect the vulnerable biodiversity of the Arctic, researchers from the University of Alberta and San Diego Zoo Wildlife Alliance (SDZWA) have identified a new conservation strategy in western Hudson Bay: using polar bears ...
Ecology
Mar 25, 2026
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Urban stormwater ponds provide important habitats for birds, including both resident and migrating species, according to research led by the University of Toronto. For the study, researchers placed audio recorders at 16 stormwater ...
Plants & Animals
Mar 24, 2026
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New research from the Shorebird Science and Conservation Collective at the Smithsonian's National Zoo and Conservation Biology Institute (NZCBI), published in the journal Conservation Biology, provides a model for big data ...
Plants & Animals
Mar 23, 2026
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As human-caused climate change continues to raise temperatures across the globe, understanding how birds regulate their temperature is vital for their conservation. But how much heat birds emit—an invisible spectrum of radiation ...
Plants & Animals
Mar 22, 2026
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The increasingly urban lifestyles of seagulls in the UK and around Europe has made them experts at grabbing food from unsuspecting outdoor diners. Herring gulls in particular are gaining a reputation for food theft in seaside ...
Ecology
Mar 21, 2026
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Animals do all sorts of things to attract each other as potential mates. Many birds, for example, produce feathers with elaborate color patterns—from the iridescent plumage of many hummingbirds to the famously brilliant tail ...
Evolution
Mar 20, 2026
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A comprehensive study has revealed substantial declines in many of South Africa's birds of prey (raptors) over the past 16 years, raising fresh concerns about the conservation status of several iconic and threatened species. ...
Plants & Animals
Mar 20, 2026
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Hungry gulls do not only steal our chips and sandwiches. They learn our habits, and look for reliable sources of food. That includes waste treatment centers, landfill or anywhere food waste is concentrated. Many gull populations ...
Ecology
Mar 19, 2026
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Milkweed has found a new strategy in its epic evolutionary battle with monarch butterflies: upgrading its toxins to outmaneuver the monarch's resistance. In a new study, published in the Proceedings of the National Academy ...
Evolution
Mar 19, 2026
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