Peter,
Probably because being herbals they are more medicinal, and
also because lacking in diet, due to such upsizing in many
bees beekeepers keep, they have gotten sick without them in
their diet. Funny how getting a whole spectrum of pollen
collected again and of course the propolis to go with them
so they can bloom, the bees are more healthy. But there is
a whole picture to consider and not sound bits here and
there by being smaller and back to natural sizing. 

1. more varied propolis for the bees to work with for
needs.
2. more varied pollen for the bees to work with for needs.
3. more varied honey for the bees to work with for needs.
4. change in flight aerodynamics for better gathering, and
different mating to the better FWIW.
5. change in flight muscles for better thermo regulation
for better heat and cold control.
6. Change in size of body parts for control of some
problems, aka mites:

 a. trachael by changing spherical openings with most
important being on the thorax
 b. Varroa by changing the tergits so not so much blood
sucking!
7. change in composition of royal jelly fed the larvae to
change the JGH trigger
8. Change in how food brought into the hive is stored which
changes in house work 
9. Change in development time of bees which has correlation
to stopping parasitic sucking by varroa in developing
larvae/pupae
10. more availability of workers in greater numbers for
division of labor for needed tasks for field and inhouse
which relates to most all above, besides chewing out
varroa, and cleansing of the broodnest periodically so life
can go on.

But why should I rant and chant back........been thru it
before, in the end Peter you learn to do what works and
follow the bees and their needs and timing, and hopefully
not ones own too much.

Dee








 
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