Anna's Hummingbird is a tiny bird with a bronze-green back and green flanks. Males have iridescent red crowns and throats, while females and juveniles have green crowns and mostly grey throats.
Anna's Hummingbirds live on the west coast of North America. They feed on insects caught in flight, flower nectar, and occasionally tree sap.
Male Anna's Hummingbirds sing during courtship. They also perform a remarkable flight display, diving down at a steep incline and making a noise with their tail feathers at the bottom of the dive.
Conservation
The Anna's Hummingbird is listed as Least Concern on the IUCN Red List and was last assessed in 2012 by BirdLife International. This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.