First hatching for me so I don't know the answer to this question. I figure it takes a couple weeks but wanted some clarification to make sure I didn't need to do something. 1 week old chicks, most 'scabs' are very small. Some are white, some are black...one is rather larger and black because chick had some bleeding immediately after hatch for just a few minutes. Could see spots of blood on sponge in bator, but it stopped quickly so I didn't intervene. The scab is larger but there is no sign of swelling or irritation around the scab, chick is active, eating and drinking and dashing around regularly and seems fine.