Approximate cost of keeping chickens?
I've been debating getting chickens for a few years now. I'm a mostly self-taught, trial-and-error home gardener. A neighbor informed me recently that her Aunt has a small coop and run (2-4 chickens) that I could possibly have. Cost is a big decision factor for my family. A free coop would take care one of the biggest obstacles. My other concern is the monthly cost of feeding/caring for chickens.
Could anyone give me a rough estimate of how much I could expect to spend on 2-4 chickens, per month? I'm talking food, grit, bedding, and anything outside of those 3. Research can only tell me what "should" work. I'd like to know what real people's experience has been. I need to know if this can work within our budget or not.