Who parasitizes the endangered Jankowski’s Bunting Emberiza jankowskii?

We report nine cases of brood parasitism in the endangered Jankowski’s Bunting Emberiza jankowskii by cuckoos in Inner Mongolia Province, China in 2018 and 2019. DNA-based and morphological evidence suggested that five chicks and four eggs of brood parasites were all Common Cuckoo Cuculus canorus, for which the Jankowski’s Bunting is a regular host.