First Look Is A Fake

Can you tell what is wrong with this birds feeder? Can you list it's bugs just looking at it?

Sometimes first look of an object does not show you anything important. Look shows you that everything is correct, but it does not show what is wrong. To discover what is wrong tester should touch an object, but some testers think that it is not necessary to touch obvious things - is it possible that I can something to touch what I can not see? I can already tell you that I can not see any bugs. But here is the actually "feeder":