Coveside Panoramic In-House Window Bird Feeder With Mirrored Panel

Is this suitable to use in winter in northern USA or do people typically take theirs down?

Is there a replacement mirror for this? My cat scratched mine :/

We don't want to feed all the pigeons that hang around our house. Any thoughts ?

We have bears in our woods, so would only use the feeder in the winter when the bears have gone to ground. Has anyone had bears visit this feeder?