An electric fence?

I've got a couple of love birds in a big cage in my porch.But the things is that,this ugly black cat keeps constantly appearing out of nowhere and frightens these poor birds.The cat also makes attempts to grab them.I am asking for aid here cuz I know something a bit buzzing can keep the pussy off,anyone any bright ideas?(probably a helpful instructable).A security system which detects the villain and alerts me can also be effective.Any help would be greatly appreciated

bwrussell4 years ago
A PIR motion sensor hooked to a buzzer should do the trick but careful where you point it because it will also go off if a human passes by.
Adarsh_tronix (author)  bwrussell4 years ago
yeah that sounds good,as long as it keeps the cat away....
You might have to experiment with different buzzers, maybe even ones that produce ultrasonic sound, and the intensity and duration of the buzz.
iceng bwrussell4 years ago
+1