they could have been cooked in the heat. Those will look unfertile. But give them a chance. I can usually see veins by Day 5, but you really have to know what you are looking for and have a high powered light. You should be able to see something by Day 10.
Very cute!! This one above looks like it might be starting to develop a cross beak. Just keep an eye on him. Even if he does develop a cross beak or a twist, he will be just fine!! They need the feed bowl to always be full, but they get along great. Looks like you are going to really be enjoying some fluff soon when they get older! I like the adult birds better than the chicks. They really mellow out and start looking really cute.![]()
I have kept it in the back of my mind that this tiny one could develop other problems, sort of from being the runt. As far as food, they always have their feeder full plus I give them treats all day long. They all love seeing me coming. Corn, watermelon, bread, pasta, dried mealy worms etc. I made them scrambled eggs everyday for the first week.