ocr: Urban deResidential City backyards, parks, gardens, cemeteries and reservoirs contain many diverse niches for birds. You can learn to identify many of the 52 birds common to towns and cities in this topic. Most of them are easily visible, and all of them have distinctive bird songs. Try using the Timer in Challenge Mode to see just how many of them you know really well. Put the others into a Subset and go through them with Incremental Learning in Challenge Mode. You will feel your knowledge grow with astonishing ease and speed. Continue
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