Soundbites is a weekly (biweekly, occasionally) feature of the coolest, newest bioacoustics, soundscape, and acoustic research, in bite-size form. Plus other cool stuff having to do with sound.
Chronic noise impacts anti-predator behavior in house sparrows: a lot of the time, bioacoustics researchers are looking at the impact of noise on communication behavior, but that’s not the only behavior that can be affected. Female house sparrows flushed more easily in chronic noise environments, but this didn’t have an impact on their reproductive success.
Traffic noise affects coloration, not calling, in European treefrogs: some frogs use what’s called multimodal signaling to attract mates, where females are drawn not only by the calling but also by a visual cue, like vocal sac inflation (see my previous post). Here, it turns out that treefrogs don’t seem to be able to change their calling structure, but they are less vibrantly colored in noisy areas. This means it’s likely that noise doesn’t just affect vocal species.
Fun link of the week: this song has been in my head all week, and it’s called WHALE, so I’m pretty sure you should go listen to it.