1. Japanese ringed bird (Zosterops simplex) 10-11 cm long, is a common settler in the Northeast, wintering in the Northwest, Northeast, North and North Central. Photo: eBird. Adults have yellowish-green upper body and sides, brighter yellow forehead and throat, grayish-white lower body, yellow undertail, large white eye rims. Photo: eBird. This bird lives in secondary forests, farming places, parks, gardens, can be found at altitudes up to 2,600 meters, often recorded moving in large numbers and continuously. Photo: eBird. 2. Zosterops erythropleurus 11-12cm long, is an uncommon wintering bird in the Northwest and Northeast, migrating through Northeast Vietnam. Photo: eBird. The adult bird has a pale yellow upper body and sides, a yellower forehead and throat, a pale white lower body, wide tawny patches on the flanks, yellow under the tail, large white bordered eyes. Photo: eBird. They live in open forest areas, secondary forests, can be found at altitudes up to 2,600 meters, often moving in mixed herds with Japanese rings. Photo: eBird. 3. Golden-throated ringed bird (Zosterops palpebrosa) 10-11 cm long, is a relatively common resident in the Northwest, Central, South Central and South Vietnam. Photo: eBird. The adult bird has a similar appearance to the Japanese ring, but the lower body has a pale yellow stripe connecting the throat to the tail, the upper body is lighter yellow, the forehead is more yellow. Photo: eBird. They live in deciduous forests, evergreen broadleaf forests, secondary forests, woodlands and cultivated areas, mangroves, parks, gardens, and can be found at elevations up to 1,550 meters. Photo: eBird. Invite readers to watch the video: Eternal sound of nature | VTV3.