I didn’t know I could do this in Lightroom! I was browsing a few videos on Youtube last night and I came across one that was very informative and gave a number of tips for Lightroom. One technique that I had to try was one where you remove colour from all except a selected part of the image. This is my first try, so be gentle!
Photography stuff: 70-200mm lens at 200mm, 1/160 sec at f/2.8, ISO 200, edited in Lightroom to remove all colour except the robin.