The Roads to Nowhere

Last week I spent an evening in a charming little wine bar fronting on a major thoroughfare in Houston. Anyone who has visited Houston can testify as to the intensity of the traffic. As the din began to make speaking difficult at our table, I began to think about the impacts such masking noise must have on breeding birds. How can a Henslow's Sparrow or Black-and-white Warbler be heard above such a cacophony?

Therefore I decided to see what existed in the literature about the impacts of roads and traffic on wildlife. Interestingly, I found quite a corpus of work that has been completed on this issue. Therefore I have posted links to a few of the many, many articles and papers that I found with a simple web search.

The results seem to be consistent. Yes, the noise from traffic does impact many species of breeding birds, even more significantly than do visual impacts. Therefore when we consider the impacts of roads on birds, we need to look well beyond the direct loss of habitat attributed to road building and the subsequent development that roads provoke. For some species and populations, new road construction may well become roads to nowhere.

Ted Eubanks

10 June 2009