Yes Hen for Houston is still going; we're now a large group and we are just getting started!
I manage a website, hensforhouston.wordpress.com where we've been posting research and staying connected. There is a sign up form on the home page so that you can get on the listserve and find out about meetings. (We have our next big meeting on April 22.) We have over 80 members!
Hens for Houston will be at the Houston Arboretum tomorrow April 14 from 10 am - 4 pm with a booth for Earth Day. We'll have several members and feathered friends there, talking about chickens!
A side note, which you'll see explained on the site as well, we don't have a proposed ordinance yet! We have ideas what will constitute a respectful ordinance, based on other cities' laws and Houston's needs. We've been focusing on the research, but very soon we will be drafting a proposal. So it's a very exciting time to get involved!