Ideas for a very small wifi onvif camera

[marklyn]

I'm trying to find a low end, very small wifi camera that would work with Blue Iris. This is for the inside of a blue bird house.
I'm seen quite a few during the past few days of searching but would like to hear from anyone who purchased something similar for a tight space.
I'd need audio input, IR, wifi and preferably onvif at a minimum. Needs to be under 4".
Suggestions appreciated.

 

[windguy]

Did you check out the thread below?

The ideal camera for my bird box

Another owl episode Dining in!

ipcamtalk.com

Perhaps PM Tubac and get his input. He's doing really well with his owl cam. Wonderful videos.
I realize you're probably looking for something smaller but it's a good place to start. Good luck!