I went to blue seal feeds and spoke with someone there (not sure if its ok to say her name, so i won't) that runs the chicken classes in NH and she is very knowledgeable and i told her what happened. she said those are pullet eggs and have a good chance of being double yolks inside, they are small eggs so far as to be expected since our girls are not fully grown yet but she too was surprised at how soon they started to lay. so she advised that i switch the flock to layer pellets right away (so i did) and that you do not have to mix the two foods together like when you change a dogs food, you can just swap it out and they will be fine. on a good note I did get another egg today which was laid as i was standing there but i didn't see it come out per say, just that there was no egg there and then one of my hens was there for a minute or two then she walked away and there was an egg! but it is so exciting when you get your first eggs because its like a payoff for all the hard work you put in for the months prior. granted a couple of my hens are very early, but i don't see why you wouldn't get your eggs before the 20 week mark if they are NH reds. good luck with your yard ladies!