Yeah - the berry bush running out of berries nearly cost me my first village. I ended up loosing 2 of my 5 people.

I wish it were a bit more clear at the beginning of the game ( perhaps during the tutorial section) that the berry bush will run out and you need to develop tech to get farming before you starve.

Another tip is you can change the run time on the game to half speed or even pause if you are going to be away and unable to monitor.

Jelli