I've been a bit slack with putting bird food out lately(I ran out and haven't managed to get to the shoips yet).
Usually I have a couple of hangers of mixed bird food, fat balls and peanuts.
The mixed bird food goes like wildfire, mostly from sparrows and startlings (thou I also have a fat pigeon who gets his fair share), but the fat balls and nuts aren't as popular.
I noticed today that as the mixed bird food is empty ,there seem to be more blue tits (saw 2) and robins (also saw 2) and might have been a chaffinch (could've been a sparrow - eyesight's not what it was

).
My question is, do you think the large numbers of sparrows and starlings that I normally have are intimidating the other species and this could be why I don't normally see them? How do you get the right balance of which food to give?
Any help/thoughts appreciated.
Thanks
SG