Black Sex Link/Hybrids - Fragile egg shells

[CSDeVault]

Correlation is not Causation - and if there were some genetic flaw in the bird affecting the way it processed calcium, you'd have seen it before year three.
Also, you mentioned yolk breaking? Is that a typo/accidental word substitution, or do you truly mean weak yolks - because that has nothing to due with calcium whatsoever.


Based on what you've written, I join the others in suspecting its most likely an individual reproductive problem - for which the various Sex Link "breeds" are famous after the first couple years of production. As egg layers, they burn the proverbial candle at both ends - a reduced healthy and productive lifespan is not unexpected. Treat the individual, or stew/sausage and replace.

Agreed thank you