Most likely house sparrows and robins, they'll be roosting in any shrubbery and eating the insets.

Robins like a hide away. I will look. The cold weather brings them right up to our windows on front & back gardens.

Tree sparrows are not common birds so as MG says, more likely to be house sparrows. Look 'em up; they are quite distinctive. Birds forage around a large area and are probably roosting some way away from your garden. I recently had a large red oak cut down due to Oak Bracket and it has had a massive effect on the bird population around here. Perhaps they have gone to my neighbours front gardens?!

Though tree sparrows have declined nationally that doesn't mean they are rare everywhere. I get a good number of tree sparrows but my friend, a few miles away, rarely if ever sees them.

Tree sparrows have a dark brown cap ....house lighter......is there another?

Not so far as I know... House Sparrows are also in decline but locally there are a lot of... Could you put an image up?

Wow just seen 2 big bullfinches this morning flying in the back in aerial ballet before settling in our birch tree & fling off. Clear blue sky & everything sunlit

My son has about twenty tree sparrows regularly visiting his garden feeders. He lives on Farcet Fen. He also has turtle doves which I never see, but we watch buzzards whilst being in bed which he doesn't see on the fen.

If you actually start looking even in urban and suburban gardens a huge number of birds visit... Given we live in a rural situation you'd think that we'd find the birds well out of the towns and villages. Not so, it simply depends on the bird! There have been flocks of 300+ Waxwing in the local town and other areas. Why in the towns... simple they eat ornamental Rowan berries and these are easiest for them to find in a suburban situation. Once they've decimated the Rowan berries they are off to the next location and, slowly, moving south...

I wish I could see waxwings, Mg. Have never seen one, tho' I'm told they visit Wisley gardens most winters, but have looked in vain.

You've got to be there at the right time Feverfew... much to early for them to be that far south yet, give it another month. Even then if there is plenty o food further north they simply won't go that far south.I'm not saying they don't g that far south only that it would, in my opinion, need to be a poor year for berries for them to do so. They are back with us heading towards Scandinavia by February.