I'm in the US, so just keep that in mind. The cameras are from a company called Wyze, available there or on Amazon. The incredible thing is that they cost $19.99 each right now (and even when not on sale they're <$25) and they work brilliantly, with a particularly good mobile app.
They have a more expensive version that has a battery, but I prefer the wired ones, since we already have power run to the coop.
The cameras have night vision (see my first three images) as well as motion detection with zones and schedules and all kinds of bells and whistles. Stick a cheap memory card in them and you can record many hours of video to replay - we use this to see which chickens have started laying, but detecting daytime motion in the nest box.
See I'm a total nerd. Hope this helps.