นก, นกกระสาสีเทา, นกวิทยา, สายพันธุ์, สัตว์, ที่อยู่อาศัย, น้ำ, ธรรมชาติ, ทะเลสาป, ขน, แม่น้ำ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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