Board Thread:General Discussion/@comment-27217546-20170223204249/@comment-24652012-20170320162021

Now, second, 1 female krogan lays 100 eggs a year, only reproductive advantage is if female krogan don't get a mate those eggs are worthless. I'd imagine male krogan earn a mate through some kind of proving, perhaps staying in the wilderness for 2 years with just a rope and a knife and being required to kill competing males if they encounter them. If they come back alive they get merried. Duno, just a fan fiction hypothesis.

Second, keep in mind Kig-yar are a oxymoron of a intelligent species. Dispite being depicted as not knowing how to use trash cans or toilets on their own ships, literally during the time period humanity was discovering "Durrr, gun powder go boom boom." With no forerunner artifact help (unless they retcon that part and add them later) no additional species helping them, (keep in mind Ibish'ian and others are only ethnics, in canon the subspecies category was a human exno-bioligist mistake)  The Kig-yar have built space boats and colonized the rest of the Y-dio system. Finding water in space isn't that hard, and if you can pull carbon dioxide from space and use sun light and a dome to shield out radioactivity space farming is easy. That's why people don't do it in real life, because it would be easy. Seriously give me the space to work, the resources, and the absence of a government who would suspect I am building nukes, and with practice I can do it.

Before the space program however Kig-yar simply fought and killed each other over resources until the population was in check. Until the covenant insured only the ones willing to beg for their lives got to live.

Finally, Unggoy breed like 340 times faster then Kig-yar, so keep in mind what a galactic threat they can become.