Data for Determining Age of Barrow's Goldeneye (Bucephala islandica) from External Characteristics, Alaska and Canada, 2007-2015
收藏U.S. Geological Survey2025-04-28 更新2026-04-23 收录
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https://www.sciencebase.gov/catalog/item/61a5a42ed34eb622f6974dce
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资源简介：
These data describe an exercise in which known age and sex class of 100 Barrow's goldeneyes (Bucephala islandica), determined by expert examination bursa and plumage, was contrasted with age and sex classes estimated from photos by trained observers.
提供机构：
Alaska Dept of Fish and Game; United States Geological Survey
