Is a cardinal a producer consumer or decomposer?

A cardinal would be a consumer. A consumer cannot produce its own food, so it must feed on other consumers or producers in order to survive. In the cardinal's case, it would eat fruits/seeds and insects in order to survive.

Producer: makes its own food (ex. plants taking via photosynthesis)

Decomposer: Organism that feeds on dead matter or waste from living organisms (ex. bacteria, fungi, some insects)