There are lots of Goldfinches in my garden these days, and all other days of the year actually. They are much commoner now than they once were. Despite being delightful, gorgeous birds to look at, their song is an unimpressive twittering.
Here are some examples, from Portugal;
… and from Kensington Gardens, London, UK;
… and another from the UK, this time from Scotland;
Twitter! twitter! twitter!