Chick internally pipped yesterday, now no noise or external pip

[AmeliaLowe]

It’s day 22, my eggs are a bit delayed because of temperature fluctuations, but this morning (UK 9 am) I had two eggs cheeping, one has externally pipped, but the other one has gone quiet, with no external pip or movement, (5:30 pm). Should I intervene? I really need replies on this ASAP

 

[Mvan42]

What does the veining look like can u still see veins. If not maybe just a safety hole in the end where the air cell is.

 

[Mvan42]

If nothing else happens you may need to intervene. Give it time though some can take up to day 25 to hatch. I am on day 21 with no pips yet