Ducks no ducks

Last Saturday I took pictures of Phillip bringing home 2 full grown ducks for the tank. Unloading, wheeling them there, unloading, etc. I just didn't get them uploaded here for the viewing. Last Thursday there was nothing left but a few feathers! They were there Wednesday. I took a picture of them in the tank swimming. That photo is my current Ravelry avatar. (I'm Huggybear there if I haven't mentioned it before.) So it looks like Nature beats us this time. Speculation is the hawks or maybe an owl. Others have said red foxes or raccoons. I personally haven't seen either of the last two but it could be possible. My vote is the hawks. 2 days after the ducks were gone, 3 hawks were swooping the tank like they were looking for more.