Can chickens eat…?

Hold the scrap, check the tag. Straight verdicts, sourced and dated -- no "maybe" answers.

• Avocado NO No, chickens should not eat avocado, and that includes the flesh.
• Chocolate NO No, chickens should never eat chocolate.
• Grapes MODERATION Yes, chickens can safely eat grapes as an occasional treat.
• Tomatoes CAUTION Yes, ripe red tomatoes are a safe, healthy occasional treat for chickens, and most flocks love them.
• Watermelon MODERATION Yes, chickens can eat watermelon, and university poultry extensions actively recommend it as a summer cooling treat.