What does a red ring around a hummingbird mean?

A red ring around a hummingbird typically refers to the bright red throat patch, or gorget, found in some species, such as the Ruby-throated Hummingbird. This vibrant coloration is primarily used for attracting mates and can appear more vibrant in certain lighting conditions. The red coloration is a result of structural coloration rather than pigmentation, which can change in intensity based on the angle of light. In specific contexts, a red ring might also refer to a band or collar used for tracking or identifying individual birds in scientific studies.