Nice one and they obviously do the trick.
Unfortunately in our garden they'd be cat feeders, especially since our beautiful little cat (not interested in birds in the slightest for some reason - mice beware!) shuffled off this mortal coil.
One thing I have noticed is this year's generation of Robins use the sunflower heart feeders and not just for fly-bys, they're actually perching to feed. Clever little birds.
Anyway, top effort mate!