February 26, 2021 SHARE Not far from the crates of kazoos, stacks of Slinkies and boxes of nylon knee highs, Chris Cella, Institute for School Partnership warehouse manager, finds the owl pellets — regurgitated clumps of mouse fur, vole bones and sparrow feathers. Cella packs the wrapped pellets into big, red boxes along with tweezers, petri dishes, paper plates, magnifying glasses, gloves, books, posters and other supplies for the mySci unit “Adapting to Change: How do living things get what they need to survive?” Cella’s team will then deliver the boxes to schools across the region, where third-graders will dissect the pellets as part of their study of ecosystems.