TriMet News: Meet Portland's Transit Mall crow-buster

From dusk until dawn, every fall into spring, the Portland Transit Mall becomes home to thousands of crows that roost downtown as night falls. Traveled by 1,570 TriMet buses and 298 MAX trains every day, the Transit Mall spans more than 57 blocks, and lies in the heart of the crows’ seasonal nighttime crash pad. Along with the annoying nonstop noise they generate, comes the messy and unpleasant problem of…poop. More.