A predator feeding on multiple prey types indicates:
A predator that routinely consumes several prey species follows a generalist feeding strategy. Generalists possess behavioral flexibility or broad capture and digestive capabilities, allowing them to switch among resources as relative abundance changes. This can buffer the predator against fluctuations in any one prey and can generate complex indirect effects across a food web. A specialist concentrates on one prey species or a narrow set and often has correspondingly precise adaptations. Feeding on multiple prey does not itself imply that prey will become extinct or that refuge use determines
Ref: Ecology: From Individuals to Ecosystems, Begon et al., 5th Ed., Ch. 10