In the field next to my house is an enormous tree, and in the mornings when I wake up, I lie and watch all the comings and goings of the birds. The other day there was LOTS of chirping, much more than usual, then there was a HUGE flock of small birds all leaving the tree together. They came back later but I couldn't see them clearly. Anyway, today I got my binoculars ready in case the same thing happened, and it did. I thought yesterday they were sparrows, but they have yellow on their wings. Are they greenfinches perhaps? What do you think?
The red head is quite small and hard to see unless you are close or use binoculars, it's much duller than depicted in painted images. They flock together, make a lot of noise and when they all fly you only see the flash of yellow wing so I'm sticking to my suggestion :-)