This one is difficult to explain in detail, but conceptually it has incredibly strong archetypes.
The scene had the look and feel of an amusement park-- like dollar-store-disneyland in that it was full of people having fun and enjoying everything, but there was no real sophistication or elaborate technology involved. Just simple amusements, like water slides and little trains for kids to ride on, that sort of thing. Like a small-town heritage park setting.
And in this place there was a stream that flowed and people would put little yellow rubber ducks in the stream and the kids would run alongside the ducks as they navigated their way down the stream around various obstacles. At some point along the way, there were black ravens released also into this stream and the ravens gave chase to the ducks. It all seemed to be great fun and people were watching, participating in this duck race with enthusiasm. I watched those who were watching and followed a few of them down to what seemed to be the end of the road, so to speak, for the ducks... Ducks and ravens alike all ended up in the same place, in a small pool all mixed together, and at this end- the children would run back up the little hill toward the start of the stream, giggling and skipping along.
But I stayed by the pool and watched as there was a small current flowing through it and the collection of ducks and ravens slowly moved from one end of the pond to the other where they floated in a mass. From there, they were channeled toward the edge of a small cliff where there was a mechanism like a ferris wheel with little scoops that rotated, picking up ducks and ravens as it turned. It interested me that no one else bothered to look at this device or concerned themselves with how the ducks and ravens were returned to the place where they started at the mouth of the stream.
As I watched, a duck was scooped up, and then a raven, a raven and then a duck and they were lifted up from the water which poured out from little drain holes in each scoop as they rotated around this wheel from the bottom to the top. At the top, the scoops turned upside down and both ducks and ravens were dumped out of the scoops, with the ravens falling onto a little conveyor belt that carried them back up the hill. The ducks however were collected in a row and one by one fell head first into a funnel of sorts, where a sharp blade promptly cut their heads off and both parts fell down the face of this cliff in the waterfall, never to be seen again.