Fertilized or no? I'm confused by the thin rings

[Crying Fowl]

As I mentioned above, are these thin rings considered a bullseye or no?

 

[sourland]

Is there any possibility that egg was incubated for a day or so ?

 

[Crying Fowl]

Is there any possibility that egg was incubated for a day or so ?

Very little chance.....I gather daily and I've not found any hidden ones in months. Their nesting box material isn't deep enough to hide any and I haven't had a broody this season. It may have been on the kitchen counter for a couple weeks.