Hen laying small eggs

[Teal05]

I have 1 hen that is laying light brown eggs that are a bit smaller than the others, I’ve narrowed it down to 1 of 4 possible hens.
Sapphire gem or black sexlink or maybe one of the australorps?
The hens I have are:
1 sapphire gem
1 black sexlink
2 australorps- light brown
2 white leghorns- white eggs
1 welsummer- dark brown with speckles
And I do have 1 roo he is a crested cream legbar
Any ideas which one it could be without having to separate each individual hen? The egg in the middle is in question
Side note: not sure who lays the medium brown egg with speckles? Thank you

 

[Silviaschicks]

possibly your black sex link, they have lighter brown eggs

 

[Granny Fixit]

I have found that occasionally a hen will lay an egg unusually small or oddly shaped. That egg is very long for its circumference.
I would think it is from a very young hen and is something of a fluke. It would be interesting to see if you continue to get such pointy eggs