| differential degradation of antbird songs in a neotropical rainforest: adaptation to perch height? | habitat characteristics that affect transmission and degradation of acoustical signals should influence strongly the evolution of bird songs. in this study propagation properties of songs of five antbird species were measured in a rainforest in southern venezuela. the investigated species (myrmothera campanisona, thamnophilus aethiops, thamnophilus amazonicus, myrmotherula axillaris, and herpsilochmus dorsimaculatus) use different song post heights at all levels of the rainforest. because there ... | 2001 | 11785827 |