ME, personally, would not let strangers stay in my house- but I'm horribly paranoid about a lot of things
I couldn't help but think someone will either steal something from you, feed your birds things they shouldn't, torture them (throw things, poke things through the bars, bang on the cage, yell at them, etc), poison them, etc...
Even if you did have a camera and monitoring system set up, I would fear that it wouldn't stop them from doing something in the first place- it would provide evidence in case something DID happen, but people still do stupid things even WITH cameras rolling.... I worked in a bank for many years and with all those cameras and security measures, you'd think we would be safe- nope, people still robbed branches, threw temper-tantrums in the lobby, throw things at us, etc.
Even if you did have a camera and monitoring system set up, I would fear that it wouldn't stop them from doing something in the first place- it would provide evidence in case something DID happen, but people still do stupid things even WITH cameras rolling.... I worked in a bank for many years and with all those cameras and security measures, you'd think we would be safe- nope, people still robbed branches, threw temper-tantrums in the lobby, throw things at us, etc.