This is excellent! Like others said, there's a lot of potential here. 

Excellent puzzle concept. The fact that it was very engaging in just a featureless grey grid makes me believe the design has a lot of room for expansion if you felt like it, adding levels/obstacles/etc. Great sound effects. :)

I went clockwise around the outside for each journey, eventually I had a highway around the outside that I could hop on for each journey.  I managed to get about 20 journeys in and then things got too hairy.
Very fun

Nice idea... I couldn't do more than 9... I guess there must be a system to it...

Fun little puzzle. I could see this being a little more fleshed out and having stages with challenges, like successfully have 3 ducks walking at a time or something. And differently shaped stages with bottlenecks. But really fun puzzle game. Oh and I really enjoy the sfx.