This picture shows a great tit from the front. Many of the birds perch in the trees, waiting to get a turn at the feeders.
Here, a great tit and a chaffinch are feeding on seed spill from the feeders. The male chaffinch is a very distinct and easy bird to spot. The females are much plainer brown, but still display the white wing bars.
If you stand still for a while, the birds will feed only a few metres away from the observer. That is until a screaming child runs around the building, or a loose dog ventures past - then the little darlings scatter at a fast rate, venturing back after a minute or so, when the disturbance has passed.