Every now and then, one of the ducks will just quack. Either sit in the pond and quack away at nothing I can figure out. Sometimes one of them is doing it while standing in the yard, quacking away at who knows what. I tell them all they are doing is letting the neighborhood predators know dinner is available. Tonight I went out with the dog to play and Cadbury is standing in the yard quacking (and had been for a bit). I finally went over to see what she was quacking at. I saw nothing, turned around and was about 3' from a poisonous snake. Ducks walked away and carried on as nothing out of the normal was happening. I got the dogs inside and the DH outside to dispatch of our poisonous visitor. Thanks Cadbury. Extra peas tonight!