ring-billed gull 中文意思是什麼
ring-billed gull
解釋
環嘴鷗-
The bill is too slender and weak for ring - billed, its mantle is far too dark mid - grey and its head shape too smooth and rounded ( more angular in ring - billed, suggesting a bigger gull )
對環頸鷗來說,問題鳥的嘴部太細太薄,鞍部在中灰色中太偏暗色,而且頭形太過平滑呈圓形(環頸鷗應較呈角形,暗示為較大型的鷗鳥) 。
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