Principal component analysis has been used to test for similarities in ecology and life habit between modern and fossil birds, however, the two main portions of the hindlimb—the foot and the long bo
Dataset used for the paper entitled "Morphological differences between wild and game-farm Mallards in North America". Large-scale releases of domesticated, game-farm Mallards to supplement wild po
See Table 2 for sample sizes. Different letters indicate significant difference of means within each group and sex.Means (±1 standard deviation) of bill measurements (in millimeter) for mallards by gr