Or cat television, akin to plopping a toddler in front of Dora or Spongebob or whatever it is Swedish kids watch. It's birdfood combined with early spring (which apparently comes with snow here), and while it may be mildly cruel in a there-will-never-be-payoff kind of way, the cats are transfixed.
And the black one, who essentially is a mild version of a toddler, bugs me for attention less often while I'm writing.