Quote: I'll see what I can find. But from experience: Lost my BLRW breeders several years ago... 4 hens and a rooster. We had high heat from drought and the girls began succumbing to the heat. The rooster was last to have issues. We have a great avian vet in the nearby town that I visited with about the symptoms. He did some online research and determined the problem stemed from vessels supplying the heart and lungs in the large bodied birds was stressed to the max with our high temeratures. This led to weakness in the vssels and connective tissues surrounding the heart and lungs and contributed to their deaths. Necropsy on the rooster confirmed the damage. Since then, other breeders have indicted similiar issues.
Here is the rooster with two of the hens, a Splash and one of the BLR.
The next picture is all four of the hens.
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