Robuta

https://dspace.lib.hawaii.edu/items/154cda5a-f68e-4a6b-a4fa-c6777ba4e638 Population estimates and monitoring guidelines for endangered Laysan teal, Anas laysanensis, at... Accurate estimates of population size are often crucial to determining status and planning recovery of endangered species. The ability to detect trends in... population estimateslaysan tealanas laysanensismonitoringguidelines