Flock sizes: Spectacled eider winter aerial survey 2020
收藏DataCite Commons2022-01-20 更新2024-07-13 收录
下载链接：
https://ecos.fws.gov/ServCat/Reference/Profile/135598
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资源简介：
This data set contains flock IDs and flock size (number of individual birds) of spectacled eider flocks encountered during the March 2020 aerial survey. Flock size is based on either counts from digital photos, or visual estimates made by observers for flocks that were not photographed.
创建时间：
2022-01-20
