Birds use fruit colour as honest signal of dietary antioxidant rewards

Agriculture & Biology

• fruit color 100%
• anthocyanins 73%
• antioxidants 53%
• birds 49%
• fruits 44%
• carotenoids 28%
• color 11%
• oxidative stress 10%
• Sylvia atricapilla 10%
• frugivores 8%
• gauges 7%
• food choices 7%
• energy content 7%
• animals 5%
• foraging 5%
• eyes 5%
• pigments 5%
• ecology 5%

Earth & Environmental Sciences

• antioxidant 88%
• fruit 82%
• bird 68%
• carotenoid 36%
• food 27%
• oxidative stress 13%
• animal 7%
• pigment 5%
• gauge 5%
• ecology 4%
• energy 2%
• experiment 2%