นก, ท้องฟ้า, เมฆ, ฝูง, การบิน, สัตว์, การโยกย้าย, ธรรมชาติ, เที่ยวบิน, สัตว์ในป่า, สีน้ำเงิน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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