What came first, the chicken or the Seattle law allowing you to raise chickens?

My question has been answered. Several years ago, I had a child client who said her family had chickens as pets and egg-layers, and I wondered why more people didn't have chickens. Turns out, for every 5000 square feet of space, you can have three chickens, and one more chicken for every additional 1000 square feet of space. 

Would this inspire you to raise chickens?

http://link.brightcove.com/services/link/bcpid1509319618/bctid1655720797