As you may already know, I make many teacup bird feeders. This one in my garden is loved by Mr Robin redbreast, I've been filling it up daily and thought to myself "he's eating a lot must have babies near by" As every time I see him there it's empty! Well look there's a thief about!
It's not a great quality pic, I took it in a hurry on my phone. But he really should know the rules of my garden and that feeder is reserved just like this one is reserved for the blue tit family.
I better design something for the bigger, hungrier birds now.