species mean headbob speed (mm s-1) variance of headbob speed (mm s-1) mean background visual noise (mm s-1) variance of background visual noise (mm s-1) mean habitat light (log(X+1); mmol m-2 s-1) variance of habitat light (log(X+1); mmol m-2 s-1) mean neighbour distance (m) variance of neighbour distance (m) neighbour distance threshold Anolis opalinus 24.61810631 2.60307755 7.470959576 0.322583543 2.179971744 0.00500042 5.48 0.512715 far Anolis grahami 27.64399073 3.866709311 10.12047487 0.673778124 1.453203378 0.01340561 4.464285714 1.099448129 near Anolis lineatopus (Sun Valley) 28.49416538 2.287586558 8.170637307 0.364087352 1.380750968 0.003965905 5.984068627 0.261491983 far Anolis lineatopus (Discovery Bay) 25.20597207 1.603056425 9.686928474 0.512891583 1.048905608 0.011124043 4.103854167 0.108618859 near Anolis sagrei 19.73929536 0.909314279 9.117517523 0.489565684 2.165595688 0.004174076 4.467179487 0.452634451 near Anolis poncensis 20.83328934 1.364866137 8.022748075 0.845773529 2.401680685 0.001475229 5.066666667 0.778471111 far Anolis gundlachi (Ciales) 36.48846866 4.173601584 9.268668702 0.636185986 0.715561007 0.004436669 6.025369048 0.137265456 far Anolis gundlachi (El Verde) 29.05434958 1.766089241 10.23527652 0.584983185 0.621074757 0.003375046 5.453717949 0.257143644 far Anolis cristatellus (El Verde) 27.90974191 2.417993653 8.790842428 0.481111098 1.627289921 0.013552129 5.576833333 0.665788599 far Anolis cristatellus (Cambalache) 28.41302077 1.574624564 7.967352595 0.340446485 0.947556911 0.008561388 5.627898551 0.345608874 far Anolis cooki 26.25203112 1.009518255 12.5477227 1.214383304 2.297817658 0.004196307 6.049393939 0.946670519 far Anolis pulchellus (Punta Picua) 23.3854102 0.89387562 8.878684407 0.259631382 2.268823692 0.002646491 4.191525 0.308607418 near Anolis pulchellus (El Verde) 19.36850157 2.322770336 8.576911878 1.614798391 1.954921565 0.02143627 4.186 1.886176 near Anolis krugi 21.87375272 3.028649628 6.722653575 0.159639938 1.461950201 0.012868926 2.686666667 0.375611111 near Anolis stratulus 21.46468951 2.397592307 7.454360156 0.77862015 1.754834886 0.025493591 3.401944444 0.414305801 near Anolis evermanni 21.30272258 2.24804028 6.299468759 0.515589774 0.919129545 0.014349269 4.838410256 0.476302848 near