Blackcap eating apples

Having seen the success of the bird feeders at Killoughter Lane I decided to try my hand at something similar. I put out the standard Nylger seeds for finches, suet balls for tits, and peanuts for everybody. Then someone I met told me that Blackcap came to apples. This sounded absolutely insane, nevertheless, the next time I had a rotten apple I impaled it on a branch to see what would happen. Within half an hour there it was, a female Blackcap tucking in...

YOU ARE A WARBLER! YOU EAT INSECT LARVAE!