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Watch femaleMasonbees build mud walls and pollen loaves for each egg in the spring. Once the females stop nesting, remove the Bee Observer and watch theMasonbee larvae eat, grow, and spin their cocoons. You can also see pests like pollen mites or chalkbrood develop! Just remember to store your Bee Observer in a safe area that mimics outdoor temps (necessary for development).Conditioned air in your home or classroom could disrupt development.