Strange egg color

[astarr2]

We have a small flock of three hens. So far, our ISA brown is the only one laying (we also have a Plymouth Rock and a Maran/possibly a Legbar mix). We were normally getting nice brown eggs from the ISA when suddenly we got these strange bluish eggs. I suspected they might be from our mystery chicken that kind of looks like a Legbar, but ever since the first bluish egg showed up, we haven't seen any more brown eggs. I don't think the ISA would just all of the sudden stop laying. Any ideas on what's going on? I attached a photo for reference:

 

[junebuggena]

It is possible that the ISA Brown stopped. New layers are erratic, and often lay in starts and stops. Since it's not just the color, but also the shape that is different, you have another layer.
How much space do they have? What are you feeding? Treats?

 

[astarr2]

They all lay, or are at least supposed to lay in the same box. They get egg layer feed pellets to eat, and we give them treats from time to time from table scraps (mostly fruits and veggies). They also enjoy eating our sweet potato vines that we ha e around the house. They run around our suburban backyard and sleep in a 5x5 coop

 

[junebuggena]

Might not be getting enough protein. Layer feed is designed to be the only thing eaten. It has just barely enough protein in it to support laying. Free ranging and treats dilutes that protein content to the point where birds just don't have enough protein to produce eggs. Remember egg whites are almost entirely protein, and that has to come from somewhere.

 

[astarr2]

Thanks for your input!

 

[donrae]

How long are we talking the ISA has not been laying?

 

[astarr2]

Last laid maybe 5 or 6 days ago

 

[aart]

Do you free range?
ISA might be laying out in range area.