| simulated birdwatchers' playback affects the behavior of two tropical birds. | although recreational birdwatchers may benefit conservation by generating interest in birds, they may also have negative effects. one such potentially negative impact is the widespread use of recorded vocalizations, or "playback," to attract birds of interest, including range-restricted and threatened species. although playback has been widely used to test hypotheses about the evolution of behavior, no peer-reviewed study has examined the impacts of playback in a birdwatching context on avian be ... | 2013 | 24147094 |
| taxonomic evaluation of the grallaria rufula (rufous antpitta) complex <br />(aves: passeriformes: grallariidae) distinguishes sixteen species. | populations in the rufous antpitta (grallaria rufula) complex occupy humid montane forests of the andes from northern colombia and adjacent venezuela to central bolivia. their tawny to cinnamon-colored plumages are generally uniform, featuring subtle variation in hue and saturation across this range. in contrast to their conservative plumage, substantial vocal differences occur among geographically isolated or parapatric populations. working within the framework of a comprehensive molecular phyl ... | 2020 | 33055681 |