First documented case of partially leucistic Rock Bunting (Emberiza cia) from Kishtwar District, Jammu & Kashmir, India

Abstract

Plumage aberrations in birds, particularly leucism, are rare but significant phenomena that offer insights into avian genetics and ecology. Leucism, distinct from albinism, results in partial or total loss of melanin in feathers without affecting eye pigmentation. Here, we report a new record of a partially leucistic Rock Bunting (Emberiza cia) from Kishtwar district, Jammu & Kashmir, India. The individual, observed on 04 February 2024 at 1163 m a.s.l., exhibited white feathers on the crown, head, throat, and tail, while maintaining normal coloration on the wings, breast, and belly. The bill, eyes, and legs appeared unaffected. It was seen foraging normally among a flock in a semi-agricultural landscape dominated by barley fields and scattered oak patches. This sighting represents a rare case of leucism in the Emberizidae family and adds to the limited records of plumage aberrations in Rock Buntings. Documenting colour aberrations in passerines is important as such records enhance our understanding of plumage variation, potential genetic or environmental influences, and their implications for species identification and ecology. Such documentation is also valuable for understanding the occurrence, survival, and ecological interactions of color-aberrant individuals in the wild.