It is! That's where I ordered it from. It doesn't look like a lot when you get the book but there's a lot fit into it and I can see why it's recommended so much, it has a lot of great information.
I haven't had a chance to put the book into action yet but I recently got the book "Starting Where You Are With What You Have" by Ralph Sturgeon and the number of birds you have seems like it would fit well with his method since his initial breeding uses 3 separate males and 3 separate females...