John Chan / Male Anna's hummingbird (Calypte anna) taking off and landing, defending its territory from intruders, Southern California, USA, March.
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John Chan / Female Anna's hummingbird (Calypte anna) flying back and forth from its perch, hunting gnats swarming nearby, Southern California, USA, January.
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John Chan / Male Anna's hummingbird (Calypte anna) stretching and taking flight, Southern California, USA, January.
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John Chan / Male Anna's hummingbird (Calypte anna) taking flight, Southern California, USA, January.
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John Chan / Male Anna's hummingbird (Calypte anna) stretching, ruffling feathers and taking flight, Southern California, USA, January.
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John Chan / Male Anna's hummingbird (Calypte anna) flying back and forth from its perch, hunting gnats swarming nearby, Southern California, USA, January.
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Piotr Naskrecki / Anna's Hummingbird (Calypte anna) male flying, Los Angeles, California
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Piotr Naskrecki / Anna's Hummingbird (Calypte anna) male flying, Los Angeles, California
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Piotr Naskrecki / Anna's Hummingbird (Calypte anna) male flying, Los Angeles, California
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Benjamin Olson / Anna's Hummingbird (Calypte anna) male, San Diego, California
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Tim Zurowski/ BIA / Anna's Hummingbird (Calypte anna), British Columbia, Canada
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Gerrit Vyn / Anna's hummingbird (Calypte anna) male, King County, Washington, USA. May.
