2019 Volume 31 Issue 1_2 Pages 22-26
We recorded the breeding behaviors of male Red-billed Starling Spodiopsar sericeus and female White-checked Starling S. cineraceus from May 1 to June 12, 2017 in Hokuto, Yamanashi Prefecture, Japan. Both the male and the female brought food for their offspring to the nest site, and we did not observe another adult starling. At least two nestlings showed their faces from entrance of the nest. Therefore, our observations suggested the interspecific hybridization between Red-billed Starling and White-checked Starling with successful fledging. As far as we know, this is the second record of the interspecific hybridization of them after the first records in Kochi Prefecture (Sato et al. 2010).