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  • Bird had been found by Shirley and Jeffrey Caldwell at their yard bird feeders in Pennsylvania

    16/11/2019

    Bird had been found by Shirley and Jeffrey Caldwell at their yard bird feeders in Pennsylvania This unusual north cardinal, Cardinalis cardinalis, is divided into two halves that are equal where one . + part is scarlet while the other is tan. This is certainly a bilateral gynandromorph, also referred to as a “half-sider”, in […]

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