P.S.-I haven't been following closely, but I did watch the video-we've seen those dark spots here too. It's the very early signs of the feathers starting to develop. It seems to be more obvious when the weather is hot rather than cool-it was VERY obvious on Orion who hatched so late.
You'll also see the dark spots in the wing-pits.
Thanks Kitty. I knew about the wing pits. I guess I just never noticed it before on other babies in the chest area. Someone had told me that black on the chest can be a sign of parasites. I"m just being paranoid as usual because the baby looked fine in SGB's video...helicopter mom

Usually at the base of the crop, so it's hard to see sometimes.
I understand...she's a special baby because of Bronx & Genesee...