Jackdaws flocking over the cliffs.
No interactions present.
I have agreed because there are a couple that I am sure are Jackdaws. The rest, it is hard to be sure, but you will know. I suspect it is a mixed corvid flock, though? I live in an area with very large flocks of corvids, mostly Rook and Jackdaw; the overriding impression of a flock is nearly always one of Jackdaws, because they are so vocal...in fact, they are usually well outnumbered by Rooks.
My Flickr photos...
Lat/Lng: 51.3967, -3.4994
OS grid ref: SS957674
This is the cliff to the east of the river. The jackdaws often flock here at the beginning and the end of the day.