Thank you for all your help and advise regarding my pigeon chicks. It was hard work but now they are fully able to eat and drink, fly and enjoy their independence! Here are a few photos of them now.
This is the biggest chick. He got the Pox the worst - some inside his beak. You can just see the last ones are drying up nicely. There is one on top of his beak and one on the side of his beak.
This was the smaller chick that had all the problems with air in its crop. Then slow crop, Then the Pox! She is now is 100% healthy and no pox lesions!!!! She is also the boss of the 2.
They are best of friends and love preening each other. Here there are hanging out on my house roof. They can fly really well now.
I have decided to keep them as pets. I will let them live free in my garden - I am building a wooden box for them to roost in that I will attach to the side of my house. If they ever want to leave they can. Its a miracle they survived. Thank you again Faith.