Which way up?

A blue tit's beak is short and thin, just right for picking up insects and spiders. But how many of these do you see in the depths of winter? If your life depended on it you would certainly find more! At this time of year, most insects are hidden in bark, on the undersides of leaves or safe inside seed heads, perhaps as grubs. 

Blue tits, however, examine everything very closely - just in case they can eat it. They spend only half their time on a branch the right way up. Often, they hang upside down, peering under leaves and into cracks in bark. It can take a blue tit half an hour to search through a whole tree, examining each branch and leaf as it goes.