Fox proof door design

Mellowmalt

Chirping
Jan 24, 2021
298
411
98
UK
Hello everyone,
I'm wondering if anyone here is familiar with this fox proof door design. Excuse the bad drawing, I'm hoping it is understandable, the door is basically a few slats that the chickens can push to get in or out, much like a cat flap. This is attached to a board on a rotating pole so that when the slats are pushed the board is pushed down along with it. Smaller chickens can still get in like this but the theory is that longer foxes would get crushed by the board the more they push the bars to get in.
I'm hoping that all makes sense. It was a long time ago I saw someone design this and it just slipped my mind but having lost a lot of chickens to foxes I want to make this design but I can't remember the ideal angle for the bars and I don't know if it even works.

fox.jpg
 

cmom

Hilltop Farm
13 Years
Nov 18, 2007
25,531
17,588
771
Florida
My Coop
My Coop
:welcome :frow I have to do some research on the door. I would think if a bird can get through so could a fox. I have had issues with fox, coyotes and bobcats as well as aerial predators primarily. I have seen coons but so far they haven't made any attempts. To combat this, I have electric wires around my coop and pens, concrete under the gates and good heavy duty netting covering all of the pens, all due to losses from predators in the past. Hard lesson learned. Especially with the hot wires a round the coops and pens, I have had no intrusions. I do have a pretty powerful fence charger. If anything touches the wires they won't attempt it again. I think the adult predators teach their young that a chicken isn't worth getting zapped for. I also have several game cameras up on my property and see predators quite often roaming mostly at night here. My fence is grounded so anything that touches the hot wire and the fence will get a zap that will hurt for a couple of days. I want a predator to know the hot wires are there. Good luck...
 

Mellowmalt

Chirping
Jan 24, 2021
298
411
98
UK
Thx for the replies guys. I am surprised nobody has seen this design. Maybe I'll copy it and become a millionaire but based on the reactions this would probably not be as popular as netting which I understand is the number 1 choice for most. I tried an automatic door opener but the one night it failed is the night I lost my chickens again!

It's a simple idea and generally the simplest designs work best. I am going to make a tunnel sort of entrance to make sure nothing can get in sideways.
 

hayley3

Crowing
13 Years
Aug 16, 2007
2,057
1,924
426
Southern Indiana
Thx for the replies guys. I am surprised nobody has seen this design. Maybe I'll copy it and become a millionaire but based on the reactions this would probably not be as popular as netting which I understand is the number 1 choice for most. I tried an automatic door opener but the one night it failed is the night I lost my chickens again!

It's a simple idea and generally the simplest designs work best. I am going to make a tunnel sort of entrance to make sure nothing can get in sideways.
Was it a brand name door that failed?
 

Mellowmalt

Chirping
Jan 24, 2021
298
411
98
UK
no it was a homemade one with a bucket, a water pump and a bottle on a timer. It worked great but it wasn't fully automatic, it only opened the coop in the morning, I still had to remember to lock it up at night so I need a better system.
 

aart

Chicken Juggler!
Premium Feather Member
8 Years
Nov 27, 2012
92,079
117,495
1,807
SW Michigan
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My Coop
I understand the concept, despite your atrocious drawing.
Kidding!
Drawings are funky but convey the concept just fine.

Never seen this design before, might work but would take some real tinkering to do.
 

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