The Grey-headed Woodpeckers don't come to the feeders in summer, generally from about November through to March, then (depending on the year) up to four daily.
Currently they are around the feeders, but is still very mild and not hopping onto the feeders much, White-backs and Middle Spots already using.
Hazel Grouse all over the place, easy to find tracks in the snow, harder to find the individuals, but a dedicated search 'should' result in success. Closest ones to my feeders are only a few hundred metres and they have strolled right past the peanut feeders on rare occasions ...I dream of a bunch scoffing the titbits dropped by the Grey-headed et al
Great Spotted Eagle, very rare summer visitor in Lithuania, not present in winter at all.
Calling here generally starts late Feb/March, though the temperature will still be generally zero or below. Were calling a little bit a week or two back too.