The Fuzz is falling off their chests and necks without enough feathers there yet to cover it up. Their necks are longer, their beaks are getting longer (and sharper) and their legs are becoming thicker. They have more feathers on their thighs. Their tail feathers are getting longer.
They are becoming more flighty (fearful) when approached. We are spending more time holding each of them to give them reassurance that we are the "good guys" here. Some of them are more comfortable with it than others. When I do reach in, I turn my hand over (palm up) and gently move my fingers. This action seems the most reassuring to them. As they approach the hand, I caress them and coo to them. Some are more accepting than others of caressing.
When holding the orloffs now, we have small terry cloth wash cloths that we use. Some of the baby chicks will just stand there enjoying the caressing. Others need more reassurance, so we kind of cocoon-wrap them in the cloth with their heads peeking out. The warmth of our hands gently around them will usually be enough to calm them down. We typically hold them for five to 10 minutes each day now. We want them to be accustomed to us as they grow so that if we need to treat them for anything later, as hens, they are more accepting of us, But, this does not work with all our hens. There is one who loves to give us a good chase!