The city has many challenges for keeping chickens. Noise, space, time, and lifestyles are but a few. When deciding what chickens to get take some consideration tothe breed type.
Chickens come in all kinds of models. They are like dogs and cats. Purebred chickens can be shown at competitions just like dogs and cats. Thers big ones, little ones, ones that hatch eggs, and ones that lay eggs. Thers some that are noisy and some that like to fly. Takingthe needs of the chickens into consideration will make a happier flock and produce more eggs.
The heavier breeds are less likely to want to fly. I have a small group of Brown Leghorns (pronounced leggerns I dont know why) and they are lightweight, eat less, but can fly even with a clipped wing. Ive had to get them from the street before, several times. They are skiddish and nervous breed of birds. However they lay an egg a day, almost everyday. I didnt know that they would fly off with ease. I thought they were wellsummers, but didnt do my homework 100%. Welsummers looka like but have a brown ear patch, Leghorns have a white ear patch.
The heavier breed chickens generally arent as flighty but eat more. I like to elt my chickens roam around the yard eating grass and bugs and what not. The next group I get wont be as flighty.
Orpingtons lay well and are docile, as are the brahma line of chickens. They take longer to mature and more feed but are a better choice over other breeds. They do well in smaller areas, as do Rhode Island Reds, and black astralorps. The barred rock is a good one too.
In a nutshell do your research before you get a breed of chickens. Figure out what you have to offer. WIll they be caged all the time, or free ranged? Do you like running around the neighborhood chasing them with a net? Do you care if they are more petlike or say out from under your feet?
Egg production is the most questioned aspect but the best egglayers are not always the best urban chicken to have for your needs. Figure out what you need, just like you would a dog or cat breed. Everyone will be more satisfied and happy. Happy chickens make happy eggs.