Lots of rooks this year

Tue 22 Feb 22: … or are they crows? The Woodlands Trust says:

Behaviour: a very sociable species so you’re unlikely to see a rook on its own. Rooks build their nests right at the tops of trees, in noisy groups known as rookeries. You are unlikely to miss them!

I think these are very much rooks. There are several trees along Park Lane that are full of them.