The Key to World Peace

There are those who say that, to achieve world peace, we'd merely have to put all the warring leaders in one room to have afternoon tea. The key is apparently not tea, however, but walnuts. Observe:
















These two have never been what you'd call enemies, but they certainly weren't above taking a swipe at the other's toes when they each had a half of the divided cage and one would walk across the roof of the other's side, and they certainly never seemed fond of each other. We started to catch a glimpse of the power of food in peacemaking scenarios when, one evening, Christian was lying on the bird room floor eating cereal, and each of the birds came down from their respective cages for a bite, and were polite yet distant with each other. However, this is unprecedented. Harmoniousness through food. It's the means to the end of all wars. And I shall provide the walnuts.