Breeding Protection Research Sweden 
10,000 Birds
MARCH 3, 2020
The source of this ranking, BirdLife International, lists Bolivia as currently having 1,439 bird species, including 18 breeding endemics. Like most maps, colors are used to indicate seasonal status (breeding resident, Austral migrant/visitor, Boreal migrant, etc.). Distribution maps are also different from other field guides.
10,000 Birds
FEBRUARY 4, 2020
There’s more, so much more, in this highly informative, detail-packed, research-based description of bird behavior. He aims to bring together all ornithological and ecological research on birds and winter the world over–not just in areas covered by snow–and summarize the findings in non-scientific language.
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