Male Calypte anna - used with permission from

Anna's hummingbird

Calypte anna, or commonly known as Anna's hummingbird, is a medium-sized hummingbird which resides on the western coast of North American.  They typically reside in places such as open woods, shrubs, gardens, and parks (Animal Diversity Web).  During the breeding season they migrate to California where the males perform their infamous swooping performance dives to impress Calypte anna females.  These cerimonious dives push the limits of flight performance and are a very interesting and unique behavior for researchers to study. 

Anna's hummingbird weighs on average 3-6 grams and only measures about 10 centimeters long (The Cornell Lab of Ornithology 2011).  Both males and females posses a green iridescent colored back and a gray colored stomach (BirdWeb).  The males distinctively have a bright iridescent red head and throat (BirdWeb). 

Through this website we hope to give you, the reader, a complete and thoughrough view of this magnificent and unique organism.  Anna's hummingbird is extremely well adapted for its' small size, making it truly one-of-a-kind.

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