Question

what two digestive organs are unique to birds? crop and gizzard crop and stomach gizzard and stomach beak and crop

Explanation:

The crop is an expandable storage organ for food, and the gizzard is a muscular organ that grinds food (often with ingested grit) — both are unique to birds' digestive systems. Stomachs are common across many animal groups, and the beak is a feeding structure, not a digestive organ.

Answer:

Crop and gizzard