I found this video helpful... www.youtube.com/watch?v=nT-0...

I'm trying to figure it all out as well... I found a couple of tutorials by googling "How to navigate Bluesky".

Yes!!

I remember when the starlings flew over my nursery in Freestone, CA. You could hear them coming before you saw them. They would darken the sky and you had to run for cover because of the droppings coming down like rain. But every year they became fewer until by 2010 there were none.