Try just the yolk of the hard boiled egg first. Mash it up. It's funny because when they are young and you put something new in, a lot of times it takes them a while to try it.... and really all it takes is one chicken... then the rest will follow ;)
Start grit as soon as they start eating things that aren't water soluble, like hay, scratch, spaghetti, grapes etc.
egg yolks and yogurt do not require grit
No, I have mine the yolk of a hard boiled egg at 3 days old. Don't be surprised if they are hesitant at first.... They can be leery of new foods at first :)
My week old chicks have refused plain yogurt and egg yolks! However, they went crazy over a ritz cracker my daughter dropped in their brooder haha! They LOVE alfalfa hay, will scratch and peck at it for hours!! Hilarious to watch. Otherwise I just give them crumbles, no grit yet. This forum is...