Chicks are about one month old

 

chick 1:

 

chick 2 - picture in day light:

 

chick 3 - picture in daylight:

 

chick 4

Chicks are about one month old

 

chick 1:

 

chick 2 - picture in day light:

 

chick 3 - picture in daylight:

 

chick 4

 

 

I think you've got some toughies here. On first glance, it looks like chick number one is the only boy. But I've had chicks that I thought were hens early on, then they started to look like yours, with a deep purple blue on the lower half of their cere. Some of them have gone on to develop that purple blue all over the whole cere (boys), and some have not. Instead, the whitish area around the nostrils grew to pervade the whole cere. (girls)

 

As long as the white is only around the nostrils, the chick has a good chance of still being a boy. But chick 4 looks like the white might spread further down the cere.

 

So my guess at this point is boy, boy, boy and can't tell. But I could change that opinion if I saw different photos under different lighting conditions.

 

Let's see what the others have to say.

If parents do not show opaline or dad is opaline the last chick would be female. I'd say the first one is female.

 

 

Unfortunately sex linked mutations won't help here

Chick 1 is cinnamon (mum cinnamon, dad split)

Chick 4 is opaline (mum opaline, dad split)

I stay group shot would help HEAPS! as seeing the difference in one shot can be easier.

 

Chicks 2 &3 - hens

the other two it is hard to tell. I lean towards hen for the first one and cock for the last one (stunning colour)

I stay group shot would help HEAPS! as seeing the difference in one shot can be easier.

 

Chicks 2 &3 - hens

the other two it is hard to tell. I lean towards hen for the first one and cock for the last one (stunning colour)

my thoughts exactly (what she said is my guess )