one time I was driving down a back-ish road, and there were no shoulders so this bicyclist was riding down the middle of it. A group of geese was on our side, so the bicyclist blew threw them, scattering them and blocking both lanes of the road, causing it to be complete unpassable.

Needless to say that both directions of traffic looked at each other and thought about bicyclists while the geese took their time to re-organize and… well, they didn’t cross. They just milled about, eventually not on both lanes of the road.