These majestic tiny birds are extremely fascinating for many reasons. The way they fly, their colorful feathers, and their high-pitched chirping are just a few of the things that make them so interesting to watch. When it comes to diversity in nature, there is no bird as diverse as the hummingbird. The hummingbird family contains more than 310 species divided into two subfamilies: The 28 Neotropical species and the 292 Nearctic species, with each living in different parts of North America (their home continent). These two groups can be further divided into 10 genera with 18 different species that reside in California alone. Hummingbirds live on average anywhere from 2-7 years, but some have been documented living up to more than 10 years.