User blog comment:Relite25/The Elder Scrolls: Revival/@comment-3076045-20120613153912/@comment-4113369-20120615223455

@ Timeoin

Well, if we assume dragonlings were one of the more dominant predators in Tamriel, I think we can also assume that they had low birthrates (don't quote me on that, though). If there were ever a conscious effort to hunt dragonlings, I'd imagine they would go extinct sooner or later. Maybe they already were close to extinct by the time of Daggerfall?

This is just conjecture I pulled out of my behind, though :P