Leg Injuries Observed in Banded Female Anna's Hummingbirds (Calypte anna) in Central California.

The article discusses a research study on Central California banded female Anna's Hummingbirds (Calypte anna) and their leg injuries. It reviews the banding of hummingbirds at Indian Peak Ranch (IP), McLaughlin Reserve (MC) and Scott Valley (SV) that use aluminum alloy. Researchers observed enlarged tarsus of hummingbirds with accumulation of fluid among females during the breeding season. Results showed that the leg enlargement at breeding season caused the leg injuries.