Long term data from the Hanko Bird Observatory
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资源简介：
Daily counts of the Hanko Bird Observatory include following data types since year 1979: (i) counts of local staging birds, (ii) counts of visual diurnal migration, (iii) standardized visual migration counts, (iv) additional observations outside the core observation area, and (v) counts of night migration.
创建时间：
2019-02-14
