"Why do seabirds eat plastic? The answer stinks marine plastic debris is an olfactory trap for seabirds -" ScienceDaily

"... turns out that marine plastic debris emits the scent of a sulfurous compound that some seabirds have relied upon for thousands of years to tell them where to find food, according to a study from the University of California, Davis. This olfactory cue essentially tricks the birds into confusing marine plastic with food...."

https://www.sciencedaily.com/releases/2016/11/161110092222.htm

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