Okay I searched all over regarding this topic but to no avail.
While yukkuris do not have a set canon of any sort, there are universal ideas that are shared in all head canons. Now I assume there are those more widely read about this or at least have a more "realistic" take in just how much food does a yukkuri eat to at least feel satisfied?
Does it eat (there are some unverifiable sources on the internet) half of its weight like humans per month?
Because if so that would mean it would be eating about 1.6% to 2% of its weight every day so a 3 kg yu would be eating around 60 grams of food to get by for the day. So does this make sense to you guys?
I know that yukkuri voraciousness tends to be portrayed quite a lot in most works but they do show that after a huge meal, huge poop is to be *immediately* expected, so that sort of answers why yus can eat more than what they should actually consume. So this sort of explains how a creature so weak can actually survive despite it being designed like a walking death flag as it can actually just subsist on what little scraps it can scrounge near its nest.
Now assuming that is the case, food shortages in yukkuri communities are directly caused by their greed and overconsumption after all assuming all yus average 3 kilos, 60 grams per yu is very easy to attain considering they can handle eating spoiled and even rotting food.