Lump on baby chick chest

[MomvdH]

I wonder if someone could look at these photos and give me your thoughts. Our two silkies hatched 2 chicks each last week, and one of them has a pretty large lump on its chest. It is in the area of the crop, so many it’s just a large crop, but it is just noticeably larger than the other 3 chicks. They are being raised outside in a protected coop, by their mamas. So they could gets bugs that walk through or are dig up, but I am only providing chick crumble and water. I’ve looked up impacted crop and sour crop, but I don’t know if a one week old chick would have that already. It is soft, not hard, but also not super squishy.
Thoughts? One week old today. Super active, eating and drinking and playing.

 

[rosemarythyme]

Looks like a very full crop to me. Best way to confirm is to take a look at the chick right at daybreak, and the crop should've gone down overnight since they don't eat when it's dark.