Thanks guys.  Katy i'd certainly be interested in buying some Marans eggs from you in the Spring.  
The perpetrators were bobcats.  One of them killed 40 or so birds overnight, she climbed up the side of my coop (which is about 8') and then squeezed between the hog panels on top and down inside.  That night I lost all of my Blue, Black, Buff and Lavender Orpingtons, Cuckoo Marans, Langshans, a fully grown turkey tom, and I can't even remember what else. It was back in January.  That bobcat was still in the coop and my husband shot her.  We gave her to a friend to skin.
I later lost my ducks, geese, Bourbon Reds, Ameraucanas, Cochins, and Blue Wyandottes.  They were in a different house/run about half a mile from the other one.  The culprit was also shot but I don't know what with.  I just left them laying for a while because it was too much 
The survivors were the ones that I was free ranging.  I don't want to tempt fate but they're still here other than my Lavender Silkies.  I have one duck that I was treating for bumblefoot and had separated from the drakes who were bothering her, a few Chocolate OEGB hens, a Blue Andalusian rooster, and some Orpington crosses.
I'm trying to decide what I want to raise now.  I was mostly looking to window shop and see what takes my fancy.  I thought about just ordering 25 pullets from a hatchery just for the eggs, but they won't bring me the same pleasure. 
  
It is scary how quickly a predator can destroy your flock.  I'd had a few raccoon attacks which weren't pleasant, but they didn't kill literally everything.
I used to have another account here but someone hacked into my e-mail during my 'time-out' and I lost my password.  Oh well LOL