A Sidekick Advent Calendar: Day 14

It's time for the second of our Sunday quizzes, this time returning to the well-traversed territory of British birds. But from a new angle! These colder months are, after all, a time for filling up bird feeders to the brim, even if the only place to hang them is outside the front window in front of someone else's parking space, as in the old Sidekick HQ. The species that feature in this quiz aren't necessarily winter birds, but you may encounter a few of them on your brisk December walks.