Sounds like you've been spooked by the scaremongering. Remember the Hippocratic rule: First, do no harm. If in doubt, do not give your birds concentrated forms (i.e. pills) of anything, especially since they might already be consuming too much of it.
It is easy to disrupt and disturb their...
I agree with you. The shell-less egg was one glitch in a long series of strong shells. Ignore it unless it becomes a common occurrence.
Sounds fine to me (though I give mine real and live worm foods).
exactly. This indicates there's nothing wrong with their shells or the amount of calcium in...