That's interesting..ie "a couple of dozen" The reason I picked up on it was that I'm aware that starlings are,actually, on the red list. It's been mentioned on here some time ago..probably in Talk Nature. Down 89% between 1967 to 2018. I almost posed about the 20 I counted that descended onto the back lawn on two occasions, two weeks ago. I was really pleased to see so many in the light of that red listing. Now you've seen a flock of similar size. Hopefully, that could be an indication they are making some measure of comeback because I haven't seen many over the years. We had two sparrows sitting on the sundial watching them and also the two resident robins sitting on a large shrub and the robins regularly dine on our lawn and very successfully, too.

I've seen them fly several metres from the fence or a large shrub to a worm, or whatever they see, so they must have excellent eyesight.
Btw. It's fascinating watching the starlings move around the lawn as if they were clockwork with their fast jerky movements..