Druk

<p style="font-weight:normal;">Dragons are usually depicted as highly adaptable creatures. It's not unlikely they were always rare, and somewhere along the line may have developed the ability to procreate through parthenogenesis. One species of lizard, the whiptail lizard, does this because all males of the species somehow died out; the species consists entirely of females. Basically, what happens is, when two females begin mating, it triggers a process in one of them where its body begins copying its own genetic code, making a sort of clone. That "clone" is then laid in an egg and develops as the baby.</p> <p style="font-weight:normal;"><i>"But weird person, Druk is confirmed to be a descendent of Ran and Shaw, and also confirmed to be male. So he can't just be a clone of a female dragon!"</i></p> <p style="font-weight:normal;">Ah, but let's consider the biology of another reptile: crocadilians. Crocs and gators, and I believe some turtles as well, aren't determined to be male or female at conception, like most other mammals. The sex of the offspring is determined by the tempurature of the nest. If the eggs are kept at a cooler temperature, the clutch will consist mostly of females. Likewise, if the nest is warmer, most of the hatchlings will be males. Don't ask me why, that I don't know.</p> <p style="font-weight:normal;">Considering these two possibilities, it wouldn't be impossible that Ran and Shao, both female, produced an egg through parthenogenesis, and then the egg was kept in a warmer nest, which resulted in baby boy Druk being born.</p> <p style="font-weight:normal;">In truth, there are a lot of possibilities that could explain it. Maybe it's as simple as one of them is male and one of them is female. Maybe dragons are hermaphroditic, like snails, or maybe they have the ability to switch sex, like the parrot fish. Nature's insane.</p> <p style="font-weight:normal;">Just for fun, I like to think the egg was bestowed on Zuko by Ran and Shao to be cared for and incubated, and all the sun warriors told him was the egg had to be kept really hot for it to hatch, so he just kept it in the hottest fire he could maintain.</p>

Well by the end of the Hundrad Year War thier were only two Dragons left but later during Korra's time their was another Dragon called Druk. How in terms of Population how do you think the Dragons are doing?