This morning I watched a greenfinch feed from my caged feeder - the sort that has a tube in the middle of a cage to prevent squirrels from stealing the sunflower seeds. The greenfinch went into the cage and then lay down on its base and proceeded eat from the bottom hole. It was in there for a good 5 mins or so and saw off a male bullfinch and another greenfinch which came to feed from higher ports. I was upstairs watching and the camera was downstairs of course, so I am kicking myself for not capturing this, It really looked very strange indeed.