Look out for these Tree bumblebee behaviours this summer: 🐦 Tree bumblebees prefer to nest high above the ground – bird boxes containing old bird nests are a firm favourite. 🌡️ In hot weather, Tree bumblebees will work together to fan their nest to keep it cool. ❌ Bumblebees don’t gather in swarms (that’s honeybees). However … 🕺 Male Tree bumblebees perform a nest surveillance – they gather in a little dancing cloud outside a nest’s entrance. They are waiting for new queens to emerge. ⚔️ Mati