In many primates, one of the most noticeable morphological developmental traits is the transition from natal fur and skin color to adult coloration. Studying the chronology and average age at such color transitions can be an easy and noninvasive method to (a) estimate the age of infants whose dates of birth were not observed, and (b) detect interindividual differences in the pace of development for infants with known birth dates.

中文翻译：

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Chacma狒狒婴儿的体色发育过渡：估计年龄和发育速度的含义。

在许多灵长类动物中，最明显的形态发育特征之一是从出生的毛皮和皮肤颜色到成年颜色的过渡。研究这种颜色转换的时间顺序和平均年龄可能是一种简便且无创的方法，可以（a）估计未观察到出生日期的婴儿的年龄，并且（b）检测已知婴儿的个体在发育速度上的个体差异出生日期。