For centuries, pink eggs have puzzled collectors and researchers. These exceptional eggs, often found in groups, contradict the traditional understanding of avian shell hues. Are they a sign to a rare genetic trait? https://docs.google.com/spreadsheets/d/1qL-aIM5KxaBFeWx9uqNsFK4KthW88k7ORDu_7a02O8s/edit?usp=sharing