Which End is Up

[Suki]

Thanks Mike.  Never thought of a magnifying glass.  I usually just go by feel and aim for "smoothness" figuring that is enough.  I can see that if you work outdoors alot that would not necessarily work.  Men also have rougher hands than women so that would also be problematic in _feel_ checking.  I have some have very rough and dimply shells and I've attributed that to calcium uptake and not necessarily genetics, but by tossing those rough eggs out, I guess I've already done some selection to prevent their reocurrence down the line.  But also as incubation continue, don't eggs naturally get more porous?

[Tailfeathers]

Porous shells can easily be seen when candling and I have not found that incubating them makes them more porous.  I believe the porosity has to do with the eggshell formation during the development stages. 

If I can remember and make the time, I'll try to take a pic or two of a porous vs non-porous egg when I start incubating.