American Ornithological Society

The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its members are primarily professional ornithologists although membership is open to anyone with an interest in birds. The AOS is a member of the Ornithological Council and Ornithological Societies of North America (OSNA). The society publishes the two scholarly journals The Auk and The Condor as well as the AOS Checklist of North American Birds.

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Arctic seabird populations respond to climate change

Seabirds such as gulls can be key indicators of environmental change as their populations respond to shifts in their ocean habitat over time. A new study from The Auk: Ornithological Advances investigates how several species ...

dateAug 15, 2018 in Ecology
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Where do crows go in winter?

"Partial migration"—where some individuals within a population migrate and some don't—is common among birds and is speculated to be a step on the evolutionary path to complete, long-distance migration, but scientists ...

dateAug 08, 2018 in Plants & Animals
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Newly discovered crossbill species numbers few

As might be expected for a recently discovered bird species in the continental United States—only the second in nearly 80 years—the Cassia Crossbill (Loxia sinesciuris) is range-restricted. It occurs in just two small ...

dateAug 01, 2018 in Ecology
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Mapping endangered red knots' remote breeding habitat

The rufa subspecies of Red Knot travels from its breeding grounds in the Canadian Arctic to its winter habitat in South America and back each year, an incredible 15,000 kilometers each way. Its numbers have fallen precipitously ...

dateAug 01, 2018 in Ecology
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Piping plovers want people to get off their lawn

A new study in The Condor: Ornithological Applications presents negative associations between anthropogenic disturbance (human recreational use of beaches, coastal modifications) and Piping Plovers on their non-breeding grounds. ...

dateJul 04, 2018 in Ecology
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