Rooster found on his back, gasping

[Phillyndilly]

Hello I'm trying to find out what happened to my cockerel.
It has been insane temperatures here probably about 90 feels like 95-100 in the sun. I have a group of younger silkies. 4 girls 2 cockerels they are about 3 months old.

I keep them separate from my flock because I was keeping them to sell just the hens and my friend was getting one rooster and I'm keeping one. I keep them in a covered pen one half chicken wire a tarp over the rest for shade.

I came home to my silke roo on his back and I thought he was dead. I'm not sure how long he was like that he was fine in the morning. I was gone about 4 hrs.
He was unable to lift his head at all and was gasping. My husband thought it was heat stroke so we put him in some luke warm water and he flapped alot but still unable to stand or lift his head.
That night we tried dipping his beak in water several times and he barely drank.
At one point he could stand but then couldn't once again. I left him propped up in a separate crate for the night .

This morning he was bad unable to lift his head or stand. When I gave him water and dipped beak( nostrils kept away from water) he seemed to be drinking. After doing that every 10-15 min I came back in and tried to prop his body up under my hand his head fell a bit and he started to vomit. I held him forward and massaged his crop a bit and he continued to vomit. It smelt very bad.
About 5 minutes later he started to seizure. I was holding him. He pooped and then i knew he was going to die. I layed him down on his towel on his side we prayed and he passed.

We tried to swab for gape worm last night and didn't get anything unusual on the swab. No nasal discharge, showing no sign of illness before yesterday. I want to know what happened and if I should be worried for the others.
I also have 3 baby turkeys in a brooder next to them who are extremely important to me they are about a month old and 2 are 2 months old. I'm worried for my others I'm confused. One of the silkies with him had wry neck at one point but other than that they all seemed fine. I'm so confused...
This is a picture of his dropping before he past.
I do still have him so I can swab or examine him... I wanted to send him out but my husband thinks it's too much money so I hope someone here can help me

 

[azygous]

Very likely heat stroke killed him. The symptoms of heat stroke, dehydration, electrolyte imbalance all mimic toxic poisoning. If caught soon enough, giving sugar water and electrolytes, it's possible to revive the victim.

You did all you could knowing what you did at the time, but it's crucial to treat for shock as well as dehydration in such cases. I always keep Gatoraid on hand as a quick emergency response to heat issues. But it's easy to make your own with a little sugar and a pinch salt and baking soda dissolved in some water.

 

[Phillyndilly]

Very likely heat stroke killed him. The symptoms of heat stroke, dehydration, electrolyte imbalance all mimic toxic poisoning. If caught soon enough, giving sugar water and electrolytes, it's possible to revive the victim.

You did all you could knowing what you did at the time, but it's crucial to treat for shock as well as dehydration in such cases. I always keep Gatoraid on hand as a quick emergency response to heat issues. But it's easy to make your own with a little sugar and a pinch salt and baking soda dissolved in some water.

Thank you it really was so hot. Sometimes I leave them inside but idk I just thought they would be okay. I am leaning towards heat stroke because it was so sudden and he showed no prior signs.
I did give save a chick in his water but is that not as good?
So as far as treating for the shock what would you do? If you don't mind telling me the steps you would've taken after you found him?

It's just so unfortunate that experience is the greatest teacher for chicken illness the things I recognize are always due to it happening.. heat stroke hasn't happened for me yet. So I will prepare for next time...

 

[azygous]

Save-a-chick has dextrose in it, I believe, but it doesn't hurt to give sugar water on top of that to be sure it's enough to raise the glucose levels.

When you find a chicken prostrate due to heat, the first thing to do is bring them inside and cool them down. Rapid cooling can be done without soaking the chicken by slipping cold compresses under the wings and laying the chicken on a cool, dampened towel so it contacts their underparts.

Wing pits and breast area is where maximum blood vessels reside and it will quickly cool down the chicken by cooling the blood in those areas. (Remember this procedure in winter if you have a chicken chilled with hypothermia. Use a warm hair dryer on those areas to quickly re-warm. You would also give the sugar and electrolytes for shock.