Odd Colored Chick

[SuperPeacockman]

One of my hens hatched out a late clutch early this week. There are six chicks 2 white, 1 pied, 2 india blue split white/dp, and 1 chick that seems noticeably darker than the other two india blues. I may be wrong and the other two chicks might be lighter than normal but I don't think I've seen a chick quite this dark. The pen they came out of is a mixed pen so theres no knowing who mom and dad are. The pen has blues, whites, pieds, and black shoulder but no real color variations. Anyone have any idea what I might be looking at? Is it some unknown recessive color gene or just some normal slight variation. The chick on the left is the darker one with a normal/lighter chick for comparison. This photo shows its back but its slightly darker all over, if it behaves today I'll try to get some better pictures.

 

[casportpony]

It's been my experience that the dark ones are female.

 

[casportpony]

Here's a thread I did:https://www.backyardchickens.com/threads/girl-or-boy-please-vote-lol.920317/

 

[KsKingBee]

It probably is just showing a little more spaulding blood than you normally see.

 

[showmestatebill]

All color mutations are from the India Blue species. Spalding comes from India Blue/Java green. So much cross breeding in the India Blue has caused a decrease in the purity of the species. So it's possible that in one clutch with both parents being India Blue, you could get several different dominant/recessive genes in color variations.