Bee Observer - Solitary Bee Observation TrayAdd the Bee Observer nesting tray to your Chalet, Villa, or Tower bee house for a fascinating look at the nesting habits of Mason bees and Leafcutter bees. The clear acrylic window allows you to observe female bees as they build nests, create mud walls, and lay eggs, offering a front row seat to the lifecycle of these gentle pollinators. Perfect for educational purposes or anyone looking to closely monitor the development of solitary bees. Key