นก, ห่านหัวบาร์, นกวิทยา, สายพันธุ์, สัตว์, ธรรมชาติ, ห่าน, ตัวบ่งชี้, นกกา, อพยพ, thol
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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