นก, การบิน, ท้องฟ้า, ฝูง, สัตว์, ธรรมชาติ, ปีก, เที่ยวบิน, การโยกย้าย, ต้นไม้, สีน้ำเงิน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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