What stress am I looking for?

[4flock]

I have two chickens who are 3 years old and have been tremendous layers. “Easter egger” breed from TSC, so not actually sure. Past two weeks production seems odd. I assume one isn’t laying. I don’t use cameras, can’t tell during the day. However I’ve gone to the coop multiple times to find a broken egg, contents I assume eaten. Doesn’t seem to be soiled like an egg yolk and contents that sat in the wood shavings would look.
It has been wildly hot for spring this year in Florida, so I first chalked up the quick slow down to heat stress. They seem to be eating and drinking normally. Vents seem natural. I did have the thought maybe calcium level was low. I’ve cracked a few easy eggs lately, so I did sprinkle in some shell powder on their feed a day ago. Maybe the eggs are breaking by force of the bird or weight, but I think one might be eating it. I’ve given them eggs before if I dropped one during collection or broke one some-how without intending to eat it right then myself. They never sought out eggs as far as I know though.

If one is eating it, is there a reason for this change of behavior? Is she seeking something I’m not feeding her?

 

[DobieLover]

If they've been laying eggs with thin shells, as soon as one of them sits on the nest to lay, the thin shelled egg has a great chance of breaking. Hens will nearly always eat as much of a broken egg as possible.
The heat can certainly be contributing to this.
I would keep a container of oyster shell on the side and give both hens a dose of liquid calcium daily (at least 500mg) for a week.
During extreme heat, offer electrolytes in their water every three days. They also need full, dense shade during the heat is the day. If you are able, give them a shallow pool with a large block of ice in it at mid-day for them to walk in and drink. Also aim a floor fan on them. Anything to help them manage the heat.

 

[4flock]

If they've been laying eggs with thin shells, as soon as one of them sits on the nest to lay, the thin shelled egg has a great chance of breaking. Hens will nearly always eat as much of a broken egg as possible.
The heat can certainly be contributing to this.
I would keep a container of oyster shell on the side and give both hens a dose of liquid calcium daily (at least 500mg) for a week.
During extreme heat, offer electrolytes in their water every three days. They also need full, dense shade during the heat is the day. If you are able, give them a shallow pool with a large block of ice in it at mid-day for them to walk in and drink. Also aim a floor fan on them. Anything to help them manage the heat.

Thank you for the advice! Appreciate it. I had one more broken this weekend.

 

[4flock]

Update!

Well I found a small opossum hanging out in the coop when I went to check on them after work a couple nights later. I have a bird net across the pen that had a tare in it around the mango tree. I assume that's how the opossum got in. I didn't find any other openings into the area then that raised alarm. Since the intruder I have only found one broken egg. So I am hoping he was the problem. Thanks for all the advise all.