Today afternoon I went outside to buy some pork fat for birds. Some birds really enjoy eating it, so when I attached pork fat to the tree branch, for about a 10 minutes birds did not payed attention to it keeping on eating seeds and dry berries from the bird feeder. Letter, a great tit, just jumping from branch to branch approuched the fat then started to eat it actively. I did not know the bird would like to eat the fat so much.