Fig. 2
From: Differences in hindlimb morphology of ducks and chickens: effects of domestication and selection
Tibiotarsal length and leg muscle mass from 3 to 7 weeks of age. Leg muscle mass (drumstick and thigh muscles) is presented using a log-scale for clarity. The upper and lower boxplot whiskers extend to within 1.5 times above and below the interquartile range, respectively. Dots outside this range are marked as outliers. Note the lack of growth in both bone length and muscle mass in all duck lines after 5 weeks of age