Jim Brandenburg / Jack Pine (Pinus banksiana) seedling sprouting after fire, Minnesota
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) sitting in tree in Jack Pine habitat. Michigan, USA. July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) male carrying food for young, Michigan, USA. July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) sitting on Jack Pine carrying food for her young, Michigan, USA, July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) female in jack pine carrying food for young. Michigan, USA, July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) female in Jack pine habitat bringing food to her nest, Michigan, USA, July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) nano tagged male sitting in Jack pine, Michigan, USA, July.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) male singing perched in Jack pine near nest. Michigan, USA, July.
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Karine Aigner / Map of Kirtland's warbler (Setophaga kirtlandii) nests drawn by researcher, in Jack pine forest habitat. Michigan, USA, July 2017.
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Karine Aigner / Portrait of a female Kirtland's warbler (Setophaga kirtlandii) a Jack pine tree. Michigan, USA, July 2017.
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Karine Aigner / Portrait of a female Kirtland's warbler (Setophaga kirtlandii) in Jack pine tree. Michigan, USA, July 2017.
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Karine Aigner / Researcher pulls back the undergrowth to reveal the ground nest of a Kirtland's warbler (Setophaga kirtlandii) family, Michigan, USA, July 2017.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) female in jack pine carrying food for young. Michigan, USA, July.
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Karine Aigner / Portrait of Nathan Cooper checking for Kirtland's warblers (Setophaga kirtlandii) Michigan, USA, July 2017.
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Karine Aigner / Kirtland's warbler (Setophaga kirtlandii) male on black background. Michigan, USA, July 2017.
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Karine Aigner / Portrait of a male Kirtland's warbler (Setophaga kirtlandii) held up in scientists hands, in breeding grounds of Jack Pine habitat. Michigan, USA, July 2017.
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Karine Aigner / Biologist Nathan Cooper taking measurements from male Kirtland's warbler (Setophaga kirtlandii) before replacing previous nano tag with a new one.Michigan, USA. July 2017.
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Cyril Ruoso / Pine (Pinus sp) forest, Grands Causses, Cevennes, France
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Jim Brandenburg / Jack Pine (Pinus banksiana) silhouetted against snow, Minnesota
