Help install bat houses around the Waltham Fields Community Farm with the Waltham Land Trust and Girl Scouts! Two young women going for their Silver Award researched Massachusetts' endangered species and built four bat boxes to donate to the Land Trust. Come to thank Jessica Costorf and Michelle Mazares-Monga for caring about bats and then hold the ladder while we climb 15 feet up to afix the boxes to buildings at the UMASS Field Station, 240 Beaver Street.