can chickens sleep standing up

[Engine823]

Well if you all have seen any of my recent posts you know I introduced two new chickens to my flock.
it's been a challenge. No SERIOUS fights but constant chasing, pecking, etc.
anyway last night and tonight the older chickens allowed the new ones into the co-op to sleep without instantly attacking them. I thinks that's a start.
however I have noticed the older chickens and one of the new ones standing on the roost instead of squating like they usually do?
Is this because they are on edge due to the new chickens being there?
Can they actually be sleeping like that or what?
I checked back over a couple hour period and saw no change in their positions
that's not how they have slept in the past.
it is very very hot here right now. Could it have something to do with that?
Thanks in advance for the help

 

[User395221]

I have been watching my chooks lately, there's one "bossy boots" who is always on a roost by herself, and she always seems to be standing up when I look in on them. I'm not sure of the reason for it, but I've observed it so I don't think it's abnormal.

 

[Engine823]

SORT OF SURPRISED THIS MORNING. I CAME OUT TO GATHER EGGS BUT ONE OF MY NEW PULLETS WAS LAYING SO I DECIDED TO WAIT TILL SHE WAS FINISHED. WHEN I WENT BACK TO GET THE EGGS I FOUND THE PULLET WAS THE ONLY CHICKEN THAT LAID. I DECIDED THAT WASNT POSSIBLE SO I SEARCHED AROUND AND FOUND THE OLD HENS HAD MOVED FROM THE COOP AND WAS LAYING IN A BUSHY FLOWER I HAVE NEXT TO THE PORCH?? WHAT THE HECK? THEY HAVE BEEN CHASING AND PUSHING THESE TWO NEW PULLETS AROUND FOR 4 DAYS NOW. EVEN TODAY THEY ARE CHASING THEM OFF THE PORCH, ETC....
WHY ON EARTH WOULD THEY NOT CHASE HER OFF THE NESTING SPOT AND MAKE HER GO SOMEWHERE ELSE?
AND JUST SO EVERYONE KNOWS I HAVE TWO NEST BOXES FOR 5 CHICKENS. THEY DONT USE THEM AT ALL. I HAVE CERAMIC EGGS IN THEM HOPING THEY WILL GET THE HINT TO USE THEM BUT THEY ALWAYS WANT TO NEST IN THE CORNER OF THE COOP