It’s not a bird, or a plane,
it’s probably your smoke alarm
If you’re hearing a strange chirping near your ceiling, it’s probably not a family of birds come to nest – it’s more likely to be your smoke alarm letting you know that the battery needs replacing. Likewise, if your alarm seems to be going off for no apparent reason, it may be that some simple maintenance needs to be done.
Rather than ignoring or putting up with the noise, there are some things you should do to get to the bottom of it. Afterall, you need to be able to rely on your smoke alarm, and for peace of mind you need it to be operating correctly.