We kept 3 hens in the back garden, now we're only left with one, a little bantam.
When young they each laid an egg each day, dwindling in numbers as the hens aged. The eggs were delicious, much tastier than those bought in supermarkets.
Their coop needs cleaning regularly, and there is a tendency for mice as they're after the food. If you're in a residential area, being chicks they can cluck a bit, so hopefully the neighbours are alright.
Hen keeping can be tying as you need someone to feed them when you go away. Also, with all the rain which we have had this year, our garden has become almost a sea of mud, not helped by our bantam pecking around.
I'm not sure whether we will get new hens in Spring. The eggs are good, but they do take some work.