Strictly For The Birds

I was just commenting yesterday to my bother Tim in New Zealand, that there were a lot of photos of birds on Blip. And now I have added to it! But this cardinal, who has included our garden in his territory, looked so striking this morning that he just needed to be photographed!
Is the air cleaner so there are more birds around, or are we just outside more to be able to notice them? At least the birds seem to be enjoying this pandemic!