IIRC, Bees build their hives with their own secretions. I see this as categorically different than animals that make nests out of various items laying around. I

IIRC, Bees build their hives with their own secretions. I see this as categorically different than animals that make nests out of various items laying around. In the case of a beaver I think it is more advanced than a birds nest because they actually harvest specific trees instead of using what’s on the ground already.