Is this a fairy egg?

[clkcdavis]

I found this tiny egg next to several regular ones in the coop. Is this what a fairy egg looks like? When cracked, there wasn't any yolk. First time in 4 years of keeping chickens this has happened.

 

[MommyGirl]

Yes I’ve gotten a couple in my 4 years

 

[aart]

Yeppers.
Fairy, fart, wind, rooster eggs are usually from a tiny piece of tissue breaking loose from the reproductive tract, or an immature ova(yolk) and the body forms an egg around it. Color can be darker than 'normal' as the pigment coating released has to cover a much smaller area so is thicker. Can happen with any age layer, but more common with older layers.