ช้อนบิล, นก, ฝูง, ทะเลสาป, เที่ยวบิน, แม่น้ำดานูบเดลต้า, ชมนก, ธรรมชาติ, น้ำ, ภูมิประเทศ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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