Karine Aigner / Portrait of a Black-capped chickadee, (Poecile atricapillus) with white background, Block island, Rhode Island, USA. Bird caught during scientific research.
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Nick Hawkins / Black capped chickadee (Poecile atricapillus) portrait, Anchorage Provincial Park, Grand Manan Island, New Brunswick, Canada, June.
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Nick Hawkins / Black-capped chickadee (Poecile atricapillus) perched on twig, portrait, Anchorage Provincial Park, Grand Manan Island, New Brunswick, Canada, June.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.
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John Cancalosi / Black-capped chickadee (Poecile atricapillus) building nest, New York, USA, April.