American Robin

同根派生

It resembles the American robin in general behaviour.
其一般行爲與美洲鶇相似。
Yen, Chiung-Fen (1989/1). Breeding biology of American Robin (Turdus migratorius). Master Thesis, Iowa State University, Ames Iowa.
顔瓊芬(1999/1)。職前生物教師進行開放式科學探究過程。博士論文，彰化師範大學科學教育研究所，彰化。
It resembles the American robin in general behaviour
其一般行爲與美洲鶇相似。
Studies show that some American Robins are appearing in their nesting areas two weeks earlier than thirty years ago.
研究顯示，一些美國知更鳥兒早在三十年前就從它們的巢內消失了。
One example is research in Colorado showing that American robins that migrate to high-altitude summer habitats arrive early and wait longer for the winter snow to melt before mating.
最近的一個例子是美國科羅拉多州的旅鶇，研究顯示，他們提早遷徙到較高海拔的夏季棲境，然後花了較長的時間等待雪融，才能開始交配。