For centuries, pink eggs have puzzled collectors and researchers. These unusual eggs, often found in nests, contradict the traditional understanding of avian shell hues. Do they indicate to a unique genetic variation? https://docs.google.com/spreadsheets/d/1qL-aIM5KxaBFeWx9uqNsFK4KthW88k7ORDu_7a02O8s/edit?usp=sharing