Urgent! Do I need to intervene?

[PippinTheChicken]

Use a soft paintbrush to apply the oil

 

[PippinTheChicken]

Good luck

 

[Sierra67]

thx for the feedback sierra but it doesn't change much to change my opinion. We would need hundreds of trials to make an accurate assessment, I will stick to my theory.
It sounds like your first one hatched early and thus didn't make it. If he hatched early then it could be that the others hatched on time and didn't need assisting.
It's fun to assist and I'd guess as a result assisting is done far too often when it isn't even needed which is why it is said so often not to do it.
So if a chick gets assisted but would have hatched unassisted by itself too that doesn't really count but is hard to assess.

I assisted because they pipped and didn’t do anything for 48 hours. The one that hatched by himself was the 3rd to hatch and they were all late to hatch. He hatched with a messed up foot which I helped fix and then later on had some internal issue. The 3 I assisted like I said are doing great