The growth of nestlings of in little egret and pond heron appeared in s curve.

白鹭和池鹭雏鸟的生长表现为S型生长曲线。

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The brown mud of its banks was a rich text of bird prints, and my boot marks joined the tracks of heron, cormorant, gull and egret.

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And every now and again, there was a squawk and a splash as a heron or egret rushed startled into the night.

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