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PCA based clustering of populations. Population clusters are within the ovals and the color of each oval represents the predominant chicken population. VD, Venda conservation flocks; NN, Naked Neck conservation flocks; OV, Ovambo conservation flocks; PK, Potchefstroom Koekoek conservation flock; SAField, village chickens from South Africa; Zimbabwe, village chickens from Zimbabwe; Malawi, village chickens from Malawi.
