"How we doing for water?" Slick asked as he entered the room. One of Little Bird's jobs was checking the tanks on the roof every morning, fishing out windblown leaves or the odd dead crow. Then he'd check the seals on the filters, maybe let ten fresh gallons in if it looked like they were running low. It took the better part of a day for ten gallons to filter down through the system to the collection tank. The fact that Little Bird dutifully took care of this was the main reason Gentry would tolerate him, but the boy's shyness probably helped as well. Little Bird managed to be pretty well invisible, as far as Gentry was concerned.