As well as using the famous grasshopper/ant story, don't forget the "Little Red Hen"! 
I am not finding any current reliable news reporting on food rationing for North America/Canada.
Rationing of precious commodities is not as rare as the WWII era--I remember gas rationing in the 70's during the Carter administration...and 14% mortgage interest rates were considered good.
rolo4evr
Matthew 6:25-34 Do Not Worry
25"Therefore I tell you, do not worry about your life, what you will eat or drink; or about your body, what you will wear. Is not life more important than food, and the body more important than clothes? 26Look at the birds of the air; they do not sow or reap or store away in barns, and yet your heavenly Father feeds them. Are you not much more valuable than they? 27Who of you by worrying can add a single hour to his life?