When I took my City Chickens 101 class back in 2007, to prepare for the flock I would be getting that year, they didn’t really cover what happens when your chickens get old. The average life span of a chicken is seven years, so when my four Buff Orpingtons turned five, it was something I started to think about. That was four years ago and at nine years old, we just lost our first chicken. Matt and I have been so lucky with these ladies. Aside from some rodent problems, some pecking issues early on (that were fixed by making their coop bigger), one egg bound situation (that was fixed by a warm…