Are you a bird watcher? Well, you should know that a bird that appears blue is actually colorless.
Have you noticed how male birds seem to be more brightly colored with more variation in feathers than female birds? Learn why on this Moment of Science.
One of the loveliest sights an ornithologist runs across is the iridescent blue found in some birds’ plumage. Sure, cardinals have red feathers and finches have yellow feathers, but if you ever run across the gleaming, almost metallic-looking blue of an indigo bunting, you won’t forget it. The colors shimmer and shine like oil on water. Learn more on this Moment of Science.
Also, when birds are trapped over and over again through the years, this gives scientists a sense of their lifespan. How else can you know if the cardinal at your bird feeder is the same one that was there last year?