เนื้อไม้, กล่องรัง, บ้านนก, ป่า, สิ่งแวดล้อม, นิเวศวิทยา, ธรรมชาติ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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