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Some Hokkaido Winter Passerines

10,000 Birds

But while humans mainly try to stay slim and fit for health reasons, Eurasian Siskins care more about the danger of being eaten. In science speak, this is named the optimal body mass hypothesis. People tend to eat more food when in company. The same was shown for Eurasian Siskins ( source ).

Research 130
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The return of the Old Man

10,000 Birds

The EU-funded LIFE+ project, called Reason for Hope, is coordinated by the Austrian association Förderverein Waldrappteam, and is claimed to be the first science-based attempt to reintroduce a migratory species to its area of origin. Such an intimate encounter with one of the world’s rarest birds was a memorable experience.

Morocco 235
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Birding Shanghai in June 2023

10,000 Birds

In the slightly frighteningly named journal “Science of The Total Environment”, there is a paper on organochlorine compounds in Purple Heron eggs nesting in sites located around a chloralkali plant (Ebro River). More work, less fun, all because humans introduced some stupid fish into kingfisher habitat.

Birds 130
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Feather Trails: A Journey of Discovery Among Endangered Birds–A Book Review

10,000 Birds

Her experiences are framed within the larger scientific histories how once common species become endangered, and of how people and organizations have strategized and explored controversial paths to bring their numbers up and nurture them till they fill our skies. This is the chapter where Osborn talks about “second chances.”

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Solid Air: Invisible Killer Saving Billions of Birds From Windows–A Book Review

10,000 Birds

Solid Air: Invisible Killer- Saving Billions of Birds from Windows is the summation of Dr. Klem’s expertise, experience, and professional life–what we scientifically know about bird and glass collisions, a handbook on how to prevent them, and, not insignificantly, the story of a remarkable career.

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Vagrancy in Birds: A Book Review

10,000 Birds

Of course, the first step is to define what is a ‘vagrant bird,’ a discussion I really appreciated since I’ve noticed that we (as in birders in general) tend to bandy the term about interchangeably with ‘accidental,’ ‘exotic,’ ‘scarce migrant,’ and ‘MEGA MEGA.’

Birds 263
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Birding Chongming Island in summer

10,000 Birds

This would have allowed you to summarize your experience in sentences such as “A total of 98 boluses regurgitated by 52 chicks aged 1 day to 11 days after hatching form the sample and are shown to contain 323 food items.” Of course, on Chongming, the Chinese Pond Heron is very common. How efficient. How surprising.

Birds 162