I am asking because my Kepler Bb people either migrate or stay put in a famine, really depends on the length of it. If it is only a few months, they will stay put. If it is closer to a year though, they will migrate, taking any seeds from their plants with them. I think fat, non-pregnant humanoids will last longer than anybody else and that the fatter they are, the longer they will last due to ketosis. But I want to know your opinion on it. I know children will last shorter than adults due to higher metabolism needed for growth and higher risk of being attacked by wild animals.