Review Time!
This game has a funny premise, with a surprisingly grim execution, and this is something I can appreciate. With that said, this has to be the most uneventful game I've played so far in this Game Jam.
There's no reason to why you wouldn't keep both conveyor belts activated, since spotting bad ducks is extremely easy due to they literally shining, and the conveyor belt carries the ducks in a very slow pace, easily allowing you to take care of both conveyors with no challenge at all. So I really don't see why you would need to activate the second conveyor belt on your own.
Besides picking up bad ducks, there's absolutely nothing else to do, and this can become extremely tedious. There could be ways to make the experience slightly more interesting: you could have made so the player *has* to discard the bad ducks in some trash compactor, or else they will follow you and kill you after a while. You could have made so the conveyor belt start moving on its own, forcing you to turn it on once in a while. Anything that could at least keep you busy, you know?
You have a time limit of 1000 seconds. That's 16 minutes. Sixteen minutes of doing nothing besides occasionally picking ducks. The experience could have definitely been made more interesting by adding a few extra tasks.
The only compliment I could really give to this game besides the wacky premise, is the fact the room you're in is very realistic (in terms of functionality and layout, not graphics) and claustrophobic, which is a bummer because you only need to interact with, like, 10% of the room.
Game Jams are a learning experience for everyone, and I hope you get out of it with a positive mindset. There's always a tomorrow to make something better, but it all starts with taking criticism.