Not to dredge up past stuff, but I'm late to the party as always...No more deaths, increase in egg numbers again (one is a marans pullet), so things are looking better here, if you ignore the rain.
My 2 cents (partial pounds? is that a thing?) any way they ate moldy feed? Even if not visibly moldy, or did they get under a feeder where is could have been hiding and growing? I don't know if mycotoxin poisoning could take them out that fast either.
The other would be some strain of cocci, it can take them out pretty quick and whatever I have over here doesn't have bloody poop as a warning, but, lethargy, puffed up, and some foamy orange poops.
If you have been having a lot of rain those are my guesses, but, both should show some symptoms.
Or, a predator coming around and caused heart attacks in the boys and the stress put the girls off laying a little?
No matter the cause, I am so sorry for your loss Blue, and I am very glad things seem to be back to normal with the ladies.
