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Figure 3 | Frontiers in Zoology

Figure 3

From: Naïve hosts of avian brood parasites accept foreign eggs, whereas older hosts fine-tune foreign egg discrimination during laying

Figure 3

Representative nests of great reed warblers with natural common cuckoo parasitism: two nests parasitized in the pre-egg laying stage (on the left), and two nests with cuckoo eggs in complete clutches (on the right). In the latter nests the cuckoo egg is in the middle of the top positions (above), and in the left top position (below). (Photo credit: István Zsoldos).

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Frontiers in Zoology

ISSN: 1742-9994