Key points are not available for this paper at this time.
马丁·L·莫顿;白冠雀(Zonotrichia leucophrys gambelii)的昼夜觅食模式,《鹗》,第69卷,第5期,1967年9月1日,第4页
马丁·L·莫顿(星期五)研究了这个问题。
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