[bduerst]

Have you tried a feline alarm system? Worked for us.

[talktime]

Thanks. I'd like to give that a try. Do you have a link to the type of model that has worked for you?

[bduerst]

I'd get one used or second hand, since they tend to be better at detecting the birds.

[talktime]

sure, but 'feline alarm system' is kind of vague - what type or model worked for you?