0 5 10 15 Proportion of each sex (%) FEMALE MALE sex 35 40 45 50 55 ↑ culmen_length_mm 14 16 18 20 14 16 18 20 14 16 18 20 culmen_depth_mm → 9 8 8 8 6 6 6 5 5 5 5 4 4 4 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 9 8 7 5 5 5 4 4 4 4 4 4 4 4 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1