Hi Frida, it’s a little indulgent but I buy a robin friendly bird mix from Ark Wildlife. I have discovered over the last 3 years that the robins’ favourite food from that is a pinkish tube shaped piece. They don’t like all of the mix, no doubt the cheaper fillers are the bits they turn their beaks up at! So each half teaspoon contains some pink stuff, a little peanut and sunflower seeds. All broken down by me to a single peck size. So no waste! and then each evening I put out a spoon of the bird mix in case I miss them asking. Whoever likes that knows the pattern and it always goes.
I could put out a larger amount on a little bird feeder tray I bought from AW but in the end the delightful array of small garden birds that came daily to that were elbowed out by masses of pigeons and some crows. So I stopped that.
It was a shame as it was a lot of fun to watch during lockdown. I learnt to identify different birds and was surprised by the variety here.