Outcomes
If a predator displays prey switching behaviour it can have a large effect on the stability of the system, coexistence of prey species, and evolutionary diversification.
Prey switching can promote coexistence between prey species. For example prey switching causes predation to be very low for prey which are rare, which can subsequently create prey refugia which will aid coexistence.
More generally than coexistence, prey switching has often been proposed to stabilise predator-prey dynamics.
Read more about this topic: Prey Switching