'Extinction' issue. Save the species for whom??? Humans' convenience, of course! Individuals of the species are snatched from their homes/family/habitat/held in captivity/forced to mate at great physical/ spiritual pain. When the right numbers are reached, their holocaust starts all over again! Another merry-go-round/ bu$ine$$ a$ u$ual!!! Protectionists/welfarists find it a profitable issue: no controversy/ easy donations! I'd rather see an entire species extinct than in the hands of the humans!