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How does the eared grebeās breeding plumage look?
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Grebe
Slavonian, or horned, grebe (Podiceps auritus)
The eared grebe (Podiceps nigricollis), also known as the black-necked grebe, is characterized in its breeding plumage by a black neck and distinctive, fan-shaped yellow ear tufts.1
Generally, during the summer breeding season, grebes develop specialized markings on the head and neck, which may include rufous, buff, black, or white coloration, as well as elongated plumes.2