Air Cell

[MGG]

I think they're definitely bad, you can safely discard them by now. You could crack them open if you want to and see if there is any development in the first one. The reddish color makes me think it might have been an early quitter. Sorry. What breeds are you hatching? I really love incubating eggs, its an incredible experience. Are your others doing well? In case you haven't seen these yet, here is a cool chart of development, and a helpful link.
https://www.backyardchickens.com/ar...ion-through-incubation-of-chicken-eggs.47879/

 

[SaraC833]

Thanks for the pics....definitely helpful. All of the eggs in that batch have been discarded. We've got plans to try again soon!