You're becoming quite the bird twitcher Bruce! Some UK friends of ours described breaking the ice in the bird bath one cold winter and then 'the silly things all came and had a bath!' Evidently the need to drink and bathe defies any sense of cold for them.
As I said before,you are the Robert Stroud of Prescott Valley.Steve
You are having such luck with standing water. I have the solar lily pad in mine for moving water in the bird bath and that has helped. Of course, mine isn't heated like yours!
Mine hasn't been heated for months since I broke the light bulb by accident.
The jay in the first picture is usually called a 'camp robber' in Montana.
I don't know much about birds but I enjoy seeing your feathery guests.
We love watching our bird bath too - they're so entertaining! Especially those occasional squirrel birds :)