> Add to the fact that most matural cavities are by thier formation watar traps and its a confusing picture 

I am not sure what this means. Anyway, no two tree cavities, nor caves, nor holes in the ground -- are alike. So to use a "natural hive" as a model is a bit daft. 

Here are results from a study which looked at three different types of hives, standard Langstroth, Kenya Top Bar, and hollow log.

> Overall, our data suggested Langstroth hives are the most attractive to migrating swarms and KTB hives are the least attractive, but otherwise there was no variation among the hive types in any of the other parameters we tested.

McMenamin, A., Mumoki, F., Frazier, M. et al.
The impact of hive type on the behavior and health of honey bee colonies (Apis mellifera) in Kenya
Apidologie. September 2017, Volume 48, Issue 5, pp 703–715 | Cite as

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