Winter Bird Census
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资源简介：
Censuses cover all observed bird species. Annual counts have been done in the winter time since 1957. Methodology is explained in link: http://www.luomus.fi/seurannat/methods.htm Data quality: From year 2019, 390 documents are incorrectly missing MY.taxonCensus: aves -key/value, which tell that all observed birds have been recorded during the census.
创建时间：
2017-09-05
