Hen disappeared today.. DEfintely need that ouside intercom

I asked before but only someone suggested wireless cam etc...
I need an intercom so I can hear whats going on outside when its cold and windows closed
My sweet gal(all B Rockers) wasnt there when all roosted. I counted over and over and checked out other coop and called and called. No Blakely...Hubby came home after dark and we checked Property and called for over an hour...
Im not sure she was even there when I left them out of their big field run to rest of property around 4:45.....
cause I was busy getting them some sunflower seeds and gathering up food dishes and closing up topper wher dust bath is, and sweeping up the sand in there etc..
I have a stong suspicion she had flew over the fence when I didnt come out say at 4:30 and roamed around. course I wouldnt have heard her screech if say a hawk or eagle etc whisked her away...
she has jumped the 4 ft. fence before ... But not in quite a while... I think, if the rest of them saw her being taken away, they wouldnt have been by the fence waiting for me... If she wasnt in their view , say behind the toolsheds etc they wouldnt have seen her.
I asked Cat over and over where is "Blakey" He may have been sleeping etc when it happened... He usually hangs around when they are left out of their giant field...
they all acted the same when they came out scratching in the mulch path and running down toward a dirt pile etc...
and I am not sure if I counted them....as they exited the gate to the unfenced rest of our property.
It was later than usual so things went hurriedly... I have to keep them away from driveway cause Hubby found one of them in the road several weeks ago.... RAH
I have bad vision so I have to put on my glasses to see them when they are not real near
If I could find my old Radio shack intercom it might help. Packed away somewhere beforer our move to here....
THANKS all

GOOD news UPDATE.... yeah our almost one year old Blakey is back ...
Hubby found her in the BIG fenced in garden this morning. He looked last night ,cause he found one of the side gates opened....I should have helped him look there too...
we both have good strong flashlights....I was so tired looking around everywhere walking and walking....
It rained some. thank goodness not real cold or real downpours..... she was a bit wet. Hubby said she didnt call out just kept pecking at the ground prob having a great time

I know that sinking feeling when your count comes up short. Glad Blakey is back safe and sound!

Yesh the little beautiful brat did it agin yesterday Hubby said.....I cant see that far away... I asked him..... why he didnt run her back in.?
That why I said to Hubby... they are going into the one run, when we both go, say to other bigger town.. Like last Fri... gone most of late day till past dark....... at least they were out from dawn, till almost noon.. first.......Hated to cause pen them up it was a beautiul day.....
AND Hubby said... two or three of the" silly butts" were in the "chute" .when we got back after dark. checking on them and closing their coop doors...
some wont push thru the little "plastic" split down the middle "curtain.. vinyl" I have there. to keep some cold out of their Rv coop door.
duh