Pop door - teaching old hens a new trick??

[gritsar]

Sunny to Brigid: Wow! What do we do? Our door is gone!
Brigid to Sunny: I dunno. Why don't you jump up there and take alook around. I think I see light on the other side.
Sunny to Brigid: I'm not gonna look! You go look!
Jezebel (in her nervous nelly voice): The sky has fallen! The sky has fallen! And it took our door with it!
Lil' Bit: Somebody go get Thor! He'll know what to do! Thor's my hero!

Lilith: Look you ol' biddies the door has to be here somewhere, you're just not looking hard enough.
Snowy: You're right as usual Lilith. Let's walk around the coop a few more times. I'm sure we'll find it.
Chloe: I think I may have found a way in. Tada!

I have one smart chicken. The rest are a bunch of birdbrains.

 

[they'reHISchickens]

We just added the pop door to the human door last week. First morning after installation, I opened the pop door, chickens came out, hens went back in at laying time, and all went back in at night. No problem at all.
On a good note: markedly less sparrows finding their way into the coop with only the pop door open.