American Robin

同根派生

It resembles the American robin in general behaviour.
其一般行为与美洲鸫相似。
Yen, Chiung-Fen (1989/1). Breeding biology of American Robin (Turdus migratorius). Master Thesis, Iowa State University, Ames Iowa.
颜琼芬(1999/1)。职前生物教师进行开放式科学探究过程。博士论文，彰化师范大学科学教育研究所，彰化。
It resembles the American robin in general behaviour
其一般行为与美洲鸫相似。
Studies show that some American Robins are appearing in their nesting areas two weeks earlier than thirty years ago.
研究显示，一些美国知更鸟儿早在三十年前就从它们的巢内消失了。
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.
最近的一个例子是美国科罗拉多州的旅鸫，研究显示，他们提早迁徙到较高海拔的夏季栖境，然后花了较长的时间等待雪融，才能开始交配。