It just wouldn't be Christmas without a quiz, would it?
We've got five pictures below, all you need to do is work out who is hiding under Santa's hat. When you have send us an email to email@example.com by 9 January with your five answers and we'll enter you into a prize draw to win a bird table from our shop, worth £79.99! Full terms and conditions are at the bottom of the page.
Mystery bird 1
Mystery bird 2
Mystery bird 3
Mystery bird 4
Mystery bird 5
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Tiny. Minute. Small.
Describe its size how you will, but goldcrests pull in a crowd. I was helping out at a bird ringing demonstration this weekend, and the goldcrests were the star attraction.
For some of the satisfied punters it was the first time they'd seen a goldcrest, let alone up so close. They vie with firecrests for the UK's smallest bird and the ones we caught weighed in at around five grams.
Just think, that's less than the weight of a pound coin! And some goldcrests take on a perilous crossing of the North Sea, leaving Scandinavia and crossing to the UK. Don't you think that it's amazing that a bird so small can make that journey?
This image is by Steve Round from our RSPB Images library. Did you know you can buy all our images as prints or canvasses?
That's the call of the marsh tit, the star of this week's Monday magic moment. It looks very, very similar to its relative, the willow tit, but the marsh tit's sneezing call can be a giveaway clue to its identity.
At this time of year, marsh tits and other woodland birds are making the most of the seeds and nuts on offer. Marsh tits' brains are specially developed to help them remember where they've hidden their food!
You can buy any photo from RSPB Images as a print or canvas.