User blog comment:AdmiralPedro1stFleet/Squadmates in ME3 I'd like/@comment-4876714-20120402213429/@comment-3325589-20120403062324

As far as I can tell, krogan females seem to be about as populous as the males. Fertile females are extremely rare, but various krogans mention entire clans of females with their own customs and governmental structure, so presumably they're not that scarce. It is true that they (and salarian females) tend not to be fighters to the extent that turian, human, or quarian women are.