The relationship between the strength of laterality and pebble-seed discrimination performance. The different symbols represent individuals from eight different species (black diamond, C. galerita; black square, E. roseicapilla; black triangle, C. fimbriatum; black circle, C. banksii; grey diamond, N. hollandicus; grey square, A. scapularis; grey triangle, P. swainsonii; grey circle, M. undulatus).