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(文章)黃口無飽期 — 家燕

(文章)黃口無飽期 — 家燕

(文章)黃口無飽期 — 家燕(筆者:Christina YM Chan)
http://thehousenews.com/nature/% ... 87%95/#.U6fHYXnyyZU
香港觀鳥會燕子研究組
Swift and Swallow Research Group of Hong Kong Bird Watching Society

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