So I ordered some Brahmah eggs online and they shipped here,one had a hairline crack and I threw it as it leaking. It has been 5 days now and I just candled them. The eggs were dark but only the yolk not most of the egg and I did not seem to see any blood vessels or embryo,is it a little early or something else? I am incubating them with some of my Arab bantam eggs and they are growing fine and have made significant progress since day 1