Fig. 6

‘Pvclust’ clustering output with the corresponding population-level foraging patterns shows higher population variability for (a) black-footed albatrosses than for (b) Laysan albatrosses. The 50 % similarity level is indicated with the dotted black line providing the threshold for population-level foraging patterns (dark grey shaded rectangles). Clusters significant at the P > 0.95 significance level are indicated with the vertical red lines. The mean behavioral composition of trips of birds in each cluster are given as colored bar diagrams with normalized means of each behavioral state (% trip)