I have ordered 3 different birdbaths that have not been too great.  The first one was two piece ceremic and broke during the first storm.  I bought one that as a concrete/fiberglass mix and the bowl’s underside totally fractured by me tipping it over to dump the dirty water.  The third one is galvanized and it’s ok so far but is quite flimsy.  This one is perfect!  It’s one piece, heavy and clearly made from concrete.  It’s got a very nice style and is quite impressive.  I would highly recommend.