PCBs Cause Birds To Sing a Different Tune

Posted by timothy on Saturday September 21, 2013 @01:55AM from the suddenly-their-passwords-don't-work dept.

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."

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Polychlorinated biphenyls (PCBs) by MasseKid · 2013-09-21 01:59 · 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.

Just in case anyone else didn't know.
Re: What is PCB? by Anonymous Coward · 2013-09-21 02:00 · 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."