Eurasian blue tit, United Kingdom

© Anne Coatesy/iStock/Getty Image

Having a holly good time. Big Garden Birdwatch

Got a keen eye for our feathered friends? Grab your binoculars and notepad as the Big Garden Birdwatch is back for its 45th year! What started as an activity for children has now turned into the world's largest garden wildlife survey. Every year, the Royal Society for the Protection of Birds—a charitable organisation—asks volunteers to spend an hour noting down the birds that pop by their gardens over the Birdwatch weekend. No garden? No worries! A balcony or local park will do just fine. Just jot down what you see and let the RSPB know. While you're sure to see many birds, here's a peek at one of our most beloved visitors—the Eurasian blue tit. Common in woodlands, gardens and farmlands, these tiny acrobats stand out in cerulean and gold against the winter grey. Cheers and happy birdwatching!