. Bulletin of the British Ornithologists' Club. Birds. 51 [ Orn. CI. 1986 106(2)] TABLE 3 Eigenvectors (see text) in a multivariate analysis of inter-locality variation in Dunlin Calidris alpina. The absolute value of each element measures the relative contribution of the relevant canonical variate. Canonical variates Character Sex 1 2 3 4 5 6 Wing-length M F Tarsus-length M F Tarsus-width M F
. Bulletin of the British Ornithologists' Club. Birds. 51 [ Orn. CI. 1986 106(2)] TABLE 3 Eigenvectors (see text) in a multivariate analysis of inter-locality variation in Dunlin Calidris alpina. The absolute value of each element measures the relative contribution of the relevant canonical variate. Canonical variates Character Sex 1 2 3 4 5 6 Wing-length M F Tarsus-length M F Tarsus-width M F Bill-length M F Tail-length M F White vane M F There was significant inter-locality variation for all characters, greatest for bill-length in both males and females. The first and second canonical variates explain nearly 95 % of the variation in males and nearly 96% in females, with bill-length, white-vane, and wing-length contributing most to these variates (Table 3). Group centroids for each locality sample are plotted graphically in Figs. 4 & 5 for males and females respectively; clustering of some group centroids is apparent. The results for LDA for the 2 sexes were clearly similar: bill-length, wing-length and white-vane being responsible for the greatest variation between groups, especially bill-length. ©. FIRST CANONICAL VARIATE () Figure 4. Linear discriminate analysis for samples of male Dunlin Calidris alpina. Group centroids for each locality are plotted on the first two canonical variates. The superimposed vectors emanate from the grand mean and their lengths reflect their contributions to the variation accounted for by these canonical variates, and their angles their relative contributions to the two variates. The characters are abbreviated; W,
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