Dark Morph of the Oriental Honey-Buzzard (Pernis ptilorhynchus orientalis) is Attributable to Specific MC1R Haplotypes Ono, Hirotake and Nagai, Kazuya and Higuchi, Hiroyoshi, Zoological Science, 41, 342-350 (2024), DOI:http://dx.doi.org/10.2108/zs230092