I am certainly no expert, having just hatched 2 chicks, so my advice is really only my opinion.....
I would not do anything, Irine. Just wait it out and see how things go. My first chick to hatch was a total surprise. I was never sure that egg ever even wiggled. Honestly, I had no hope that egg would hatch. Yet, it was the first one! I have no idea about "sounding," and all the other things everyone talks about. Tapping? I just let nature take its course. No way was I gonna drill a hole.
Anyway, good luck to ya!
I would not do anything, Irine. Just wait it out and see how things go. My first chick to hatch was a total surprise. I was never sure that egg ever even wiggled. Honestly, I had no hope that egg would hatch. Yet, it was the first one! I have no idea about "sounding," and all the other things everyone talks about. Tapping? I just let nature take its course. No way was I gonna drill a hole.
Anyway, good luck to ya!