Abstract
Winter bird survey was conducted along the climbing path and the road along the coast of the Ullung Island, from 12 to 19 January, 1995. During the survey a total of 786 birds belonging to 16 species, 14 families, and 6 orders, were observed. Among them, dominant species were Black-tailed Gull Larus crassirostris (7.81/km, 41.4%), Great Tit Parus major dageletensis (4.13/km, 24.7%), Brown-eared Bulbul Hypsipetes amaurotis (2.17/km, 13.0%), Yellow-throated Bunting Emberiza elegans (1.62/km, 9.7%), and Tree Sparrow Passer montanus (1.60/km, 9.5%). Tree Sparrows were recorded in Hyonpo only. The occurrence of Tree Sparrows may be related with food supply and snow cover in winter on the Ullung Island. Russet Saprrow Passer rutilans reported as a resident in South Korea, was not found during the survey.
