This is perfect for my small backyard.  It comes in three pieces that you put together.  The base, the pole in which you put sand or rocks, and the top.  Goes together very easily.  It is light weight, which is what I wanted after having a cement bird bath.  Has been in some wicked winds and did not fall over.  It is smaller, but fits 5 or so sparrows all bathing at the same time.  The depth is good  for the smaller birds, Chickadees, sparrows etc. although I have had some magpies using it as well.