Just beside my bedroom window. What they are building is the hexagonal palace for a colony consisting of them, babies and queens keeoing future in mind. They work all day along and I can see them flying off and then again coming back without wasting time. They are helping each other out by sharing the work load and they are coherent among themselves. They have the courage to build such a huge palace with only few of them. They are hard working and passionate about their work. Put your ears closer and you will be able to listen to the song they are singing "We shall overcome … "