We are so devastated.We had 3 black and 1 golden laced wyondottes.They turned 1 on April 1st.We turned the tractor shed into a coop,my hubby took 1/4 of it n made nice beds etc.Been that way since we moved them out there last July.This past Sunday he took down the walls to make it bigger.He made nicer beds,nesting boxes and used the same ramp.So instead of 1/4 of the shed they now would have 3/4.Pretty good for only 4 girls.(We were planning on getting more in the spring)Anyway,Sun while my son n hubby worked,I sat out in the "playyard with the girls,they were fine.Monday when I went to open up the coop,they were all sleeping on the floor and not in the new beds.When I checked on them later in the day,Miney was in the 1 nesting beds and did lay a egg.She also seemed to be panting,which they have done when it is warm.We have had a mild summer,70's-80's and the last 3 days it has been more humid n 90's.The old beds were a nice size piece of plywood,with 4 individuals squares but all connected and no top/cover.The new beds are the same but with a plywood piece ontop and up against a wall like the old beds.They now also had a window,which was in there but when he took the wall down,the window would now be next to the beds.Monday night when I tucked em in,they seemed fine.This Am when I went out to let them out and give them the normal:apples,dried oats,seeds and fresh water they were all ok.Then this afternoon my hubby went out to take fresh water and came running back in saying something was wrong.I went out and miney was on the floor,infront of the window and her 3 sisters were all standing there looking at her.She was gone.It was sooo heart breaking.It was so odd to see the other girls with that sad look and my hubby was so so devistated.(His brother had tried for years to get him to get chickens,as he was so sick with cancer my hubby gave in and we got the girls while his brother picked up his last batch of 25,when his brother passed away 6weeks later,my husband found great comfort sitting out in the play yard with the girls and thinking of his brother)These girls have so much meaning to us and esp my poor hubby.In his brothers last days,he would tell everyone,"I finally got my brother to be a chicken farmer" he was so proud of himself for that.So we are not sure what happened to miney.There was no critters in there(IT is more secure than fort knox).There was no obvious injuries.I checked her over real good and could not find anything.So do chicks get stressed enough to die from a remodeling job in the coop? Could she have tried to fly out the closed window? We have a fan in there but not blowing directly on them,just to keep ventilation from the front door/trap door.the walls are 1/2 plywood on the bottom n 1/2 heavy guage wire on top,so there is the breeze.I did give them watermelon on sunday,which theyve had before.we are so confused as to HOW/WHY this happened???Now tonight about a hour after putting them in for the night I went out to check on them and the 3 girls were all on the floor.The stuff in the nesting boxes was rearranged so one or more of them were in them.We did have a shelf up on the wall,incase a critter would get in then they'd have something high to go to.In the old coop they would fly up to that shelf from the beds,which was about 3 feet straight across from the beds,well my hubby never took down that shelf n tonight 1 of the girls tried to fly up there from the floor(abt 5 1/2 feet up from the floor) she didnt make it,so hubby took the shelf down and put it 3 feet of the ground.After he did that she got off my back and onto the shelf..We are sooo confused and trying to figure out what we did wrong.These girls are soo spoiled and so well taken care of,not sure what we did wrong.we also covered the window,thinking perhaps miney looked out n saw her sisters and thought she could get out that way.The window looks out into the fenced play yard.So when you rearrange the bedding shelves,etc does this upset them? Could that have caused her death?I told hubby he needed to put beds up,just like they had in the same area and see what they do,Yepper first thing in the am....We feel horrible,all of them acted fine,ate,drank and played like normal.No signs or symptoms of anything.EENIE,MEENIE and MO are really gonna miss their miney and we are too.We just need to figure out what happened n why,dont want to make the same mistake again.Thanks so much for any help and/or advice.