I have to say I could sit and watch this feeder in the valley of the River Glaven, North Norfolk, situated outside the window of a wildlife reserve tea shop, for hours. The activity around it was relentless, with a number of species feeding below it too. Late winter is a crucial time for birds, when natural supplies have diminished. The temptation is to stop feeding as the weather improves but this is a time when birds still have to deal with cold nights and the drain on their fat reserves they represent as well as starting to nest-build and invest in egg production. the species in this video are blue tit, great tit, coal tit (with the white stripe on the back of the head) and long-tailed tit.