Sometimes its good for a scientist to just sit around and think.  In my preparation for going to Mongolia, I've been thinking alot about Psittacosaurus and why we find so many of them in areas we call "psittco-cities."  So far we have over 100 skeletons from an area less than one square mile in size.  Finding a lot of psittacosaurs is important for the kind of studies we're trying to make, like determining species variation, but it is curious that there are so many skeletons in such a relatively small space, and that few of them are babies, or large adults.  The fact that there are few babies suggests that it's probably not where they raised their young--so what could it be?  It's a very curious puzzle, and this season we will try to find a solution.  We will also be searching a new area where we think we will find another large group of Psittacosaurus--another Psittaco-City.