Lash egg?

[diamondsilkies]

I went out to the coop today and found a weirdly shaped something on the ground. I've heard of lash eggs before and was thinking that might be what this is? I don't know much about them, or what they mean but I've heard they're bad. I was out there to take some photos of some chicks I have for sale, so I had my camera on me and took some photos. Is this a lash egg? If so, what does that mean?

They've all been laying quite well except for one, my black australorp. She has some unknown swelling underneath her vent, but it doesn't seem to bother her. I made a thread on it a while back (https://www.backyardchickens.com/threads/large-swelling-under-vent.1209564/). She's the only one that's been having health issues. Other than that, everyone is fine, and I have no proof that she laid it.

Here it is cut open:

 

[Lamaremybabies]

Yeah, that’s lash egg. If I remember correctly most don’t live more than a year.

 

[ChickNanny13]

Yes, it's a lash egg. Search Lash Eggs in the Emergencies/Disease/Injury & Cures forum for more information.

 

[diamondsilkies]

I've been doing some research, and I'm still thinking it could be my black australorp. I read one of the symptoms was large swellings like that, and she hasn't laid an egg for months. I've been watching her closely, but she seems really healthy. She constantly has a red comb, bright eyes, shiny feathers, and is very curious and alert.

Apparently it can also be a one time thing, so I'll keep my eye out and maybe try to narrow it down.