Three finch species jostling for seeds

It isn't often that IO see three species of finch jostling together for the food. I'd been following the pair of bullfinches as they seem to be preparing for the mating season, following each other between the tree branches and this sunflower feeder. I've noticed two pairs are often close by each other. This female was singularly unmoved and concentrated on eating as much as possible.

The arrival of the lone goldfinch did produce the usual flurry of displaying, but the approach of the greenfinch was very unexpected. I've only seen one or two on odd occasions this winter. Food must be in shoirt supply on these cold dark days.