Catch that flight
A word of warning: if you take this lens out of its case in a crowd, prepare yourself for some questions. You're going to attract some attention. So, when you need that incredible close-up of the "never-before-sighted-in-this-area warbler," make sure you're alone. When that amazing job you created for yourself consists of documenting wildlife that exists as a tiny splash of color over on the next ridgeline, you'd better believe you need a tool that can do the job.
Most birds that attract the attention of birders worldwide are two things: small and shy. The Canon EF 800mm f/5.6 IS USM is singularly up to the task of getting a dramatic, crisp shot of your target bird in its native environment, while letting it be its shy self. With the longest telephoto reach of the entire Canon L Series family, this lens will be your go-to choice for wildlife, news event and sports photography. Two stabilization modes are optimized for either static subjects, or panning moving images. You'll be able to capture spectacular shots of race cars screaming down the straightaway or the state's next governor from the crowd's edge.