Some of the most interesting woodland birdwatching in winter comes from wandering, foraging, roving flocks. These are usually dominated by tit species, particularly Blue, Great and Long-tailed Tits, but such flocks usually contain a mix of species, including wintering warblers, Treecreepers, woodpeckers and perhaps even something more unusual, such as a Firecrest. If and when you encounter such a flock, find a place where the flock will cross and settle, stand back and watch it come through, checking what is there. Note how Great Tits will feed on the ground, while Blue Tits tend to feed higher up. Roving tit flocks are fascinating and interesting and really can help brush up your ID skills.
Great and Blue Tits