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Message: <blockquote data-quote="jurek" data-source="post: 3574285" data-attributes="member: 3357">I think it is the best solution among the easy ones.The concept of stocks might also protect unique populations adapted to local conditions. Desert elephants, desert bighorn sheep, siberian tigers, Amur leopards, numerous plant populations tolerant to salt, drought, heavy metals are not separate species. Fine-tuning of their genetics and behavior means they live in places where 'standard' populations of their species cannot survive. And are keystone species there. I am not familiar with hunting, but never heard there is much drive to shoot all eight spiral-horned antelope. I presume if it exists, and if a number of species of kudu increased to 20, reaction of the hunters would be to lose interest.I am curious how the system of EDGE, or evolutionary distinct forms would work in birding? A birder who saw a distinct bird would get more points than another drab warbler. Which surprisingly well matches the actual interest of birders. Traveling birders are excited to see a Sunbittern, Zelenodia, Kagu or another unique species. But very strained species, like Eastern Olivaceous Warbler or Scottish Crossbill get little excitement.</blockquote>