PCBs Cause Birds To Sing a Different Tune 67
An anonymous reader writes "Songbirds living along the Hudson River in New York state are exposed to levels of PCBs that don't kill them but do disrupt the songs they sing, reports a team of researchers from Cornell University. Their study reveals that birds residing in regions with higher environmental PCB contamination levels have higher total blood PCBs, which affects their singing behaviour: the team found these species' songs varied predictably based on their PCB load, and also based upon the type of PCBs. Thus, the scientists suggest that another of the many toxic effects of sublethal environmental PCB pollution are neurological effects that translate into observable behaviour changes that disrupt song quality used by birds to communicate."
Polychlorinated biphenyls (PCBs) (Score:5, Informative)
Just in case anyone else didn't know.
Re: What is PCB? (Score:4, Informative)
"Polychlorinated biphenyls (PCBs) are man-made chemicals that were widely used as chemical coolants and electrical insulators in electrical motors and transformers."
Re: What is PCB? (Score:3, Informative)
"Polychlorinated biphenyls (PCBs) are man-made chemicals that were widely used as chemical coolants and electrical insulators in electrical motors and transformers."
While I was aware of polychlorinated biphenyls, I'd never actually heard of them called "PCBs" before. To me, that acronym always means "Printed Circuit Board".
But, it does seem to just be my own ignorance. Wikipedia redirect "PCBs" to "Polychlorinated Biphenyl" and shows images of warning signs that also use that acronym. (note that "PCB" on Wikipedia however is a disambiguation page, with "Printed Circuit Board" as the top entry)