Noise from Gas Compressors Stresses Nesting Birds (image) Florida Museum of Natural History Share Print E-Mail Caption Researchers found that birds nesting in natural gas fields have symptoms similar to those in humans suffering from post-traumatic stress disorder. The constant noise drastically skews their stress hormone levels. Credit Nathan Kleist Usage Restrictions Please credit Nathan Kleist Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.