A migratory male Blue Rock-Thrush Monticola solitarius is perched on a tree as it looks from side to side

blue rockthrush monticola solitarius birds of thailand animals of thailand migratory birds to thailand migratory birds blue thrush male rockthrush turdidae passeriformes passerine bird rock thrush resident southeast asia forest jungle rainforest foraging feeding bluegrey khao yai national park thailand kaeng krachan perched tree branches green flowers fruits twigs leaves tail bill feathers wings avian breeze windy