and males will call to each other, with females starting loud and then quieting down as males approach, males will feed females during courtship. Eggs As a brood parasitic species, they lay one dark brown egg in enclosed or domed shaped nests of passerine bird species. In particular studies have shown it prefers to target speckled warbler and redthroat birds. Eggs have also been found in nests of fieldwrens, thornbills, scrubwrens and heathwrens Often a female black-eared cuckoo will remove one host eggs when replacing it with its own. These eggs are coloured and sized to mimic the hosts eggs, often the eggs are so well mimicked, that they can only be identified apart by rubbing the egg to remove the brown pigmentation. Therefore, hatchings are raised by host species, with speckled warblers having been observed feeding black-eared cuckoo chicks. After at least 18-day, the chick will leave its hosts nest. References black-eared cuckoo Birds of Australia black-eared cuckoo Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN