Ok, I just moved house a bit out of the center. That's been taking up my time for tha past 2 weeks. There are plenty of crows, jackdaws, magpies and jays here and I already have a bunch of jackdaws coming to my balcony. 

Now I can work on refactoring the circuit to fix a few annoying things I did with it, like passing motor current trought two BJTs for no good reason.

Main changes will be:

• common ground - secondary ground causes needless complications
• sensors will have a high-side switch
• vibration motor will have a low-side switch, probably a MOSFET
• general rejiggering of the breadboard to tidy it up

These changes should also make the curcuit easier to integrate with other things like SBCs or microcontrollers. One such adition I want to make is a camera that records when the motion detector is triggered. I plan to use a Rasperry Pi Zero-W I had laying around and a wide angle camera module I got for a few euro. I'll put thi in a large Tic-Tac container and place this just above the motion detector, under the half-jar lid overhanging on the front to shelter it a bit.

I hope to get the circuit fixed during next week, and while I'm testing it out I'll get the camera ready. The whole thing is moot if I can't demonstrate that birds will come to it and interact with it.