Egg without shell or membrane?

[pennyJo1960]

Thanks for that thought..I will try keep an eye cos I don't want them eating the eggshells in the coop. I hope bluebell is OK and that it's just a need for more calcium.
I really appreciate people taking the time to reply too

Give the oyster, You can add crushed shell to it if you want

 

[Ridgerunner]

Until you know which one is laying it and hos often, I have no suggestions on treatment.

If the other eggs are OK there is no reason to increase calcium for everyone.

 

[Hylee Unlikely]

I have one Australorp that sometimes loses an egg at night while she's on the roost and sometimes it's a leather egg. I recently switched them to a different layerfeed which has increased egg production amongst the flock, it still happens occasionally.
I have 4 new young Golden Comet pullets that are overachievers (typical in my limited experience). They started laying at 4 months, little bitty eggs at first, gradually getting bigger). One of them has had a leather egg a couple of times.
They just turned 5 months last Wednesday.

Recently I found 2 leather eggs in their run, right next to each other.
About an hour ago I noticed one girl stand in the run like she had to poop so I just watched and sure enough, she dropped one leather egg which I quickly snatched before one of the Australorps could get to it.
The Aussie then stayed with the Comet, like she knew there was going to be a second egg. Well, I stayed and watched and a couple of minutes later she popped out a second egg, almost identical in size.
Both had beautiful yokes, just no shells. The Comets' eggs are a gorgeous dark copper color and easy to distinguish from the very light colored eggs the Australorps produce. And all their regular eggs have incredibly thick, hard shells - they're tough to crack open.

Now here is the crazy thing:

I had 4 beautiful eggs from the young comets this morning by 10am. 4 comets, 4 eggs.
Then at 6:30pm, I observed Mellow laying the two leather eggs. Holy smokes! So unless one of the other Comets layed two eggs this morning, Mellow layed 3 eggs today, one regular with a nice solid shell and two good sized leather eggs. Wow. She won't get very old if she keeps it up!
I realize the Golden Comets put out a lot and rather large eggs at times, which takes a toll on their bodies. I even had little Gracie Comet (from my first flock, something must have happened to her when she was young, she waddled instead of a normal gait and tried to follow me around like our velcro Great Danes that want to go to the bathroom with us) lay 2 eggs in one day and she often made ginormous double yokers, one was so big I thought it was a triple yoker. Turned out to be a double, if I recall correct it was well over 108 grams (might have been more, it was a few years ago).

Hopefully the Comet pullets settle into a more "normal" rythm as they mature! At least now I know which of them has the leather eggs!