Jack Dykinga / Lightning storm at twilight with Saguaro cactus (Carnegiea gigantea) Avra Valley, Saguaro National Park, Tucson Mountains, Arizona, USA. June 2015. Long exposure with lightning trigger.
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Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus at night, Saguaro National Park, Arizona
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Jack Dykinga / Great horned owl (Bubo virginianus) chicks in nest in Saguaro cactus (Carnegiea gigantea) at sunset, Santa Catalina Mountains, Arizona, USA, May.
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Jack Dykinga / Great horned owl (Bubo virginianus) chicks nesting in saguaro cactus (Carnegiea gigantea), near Oracle, Sonoran Desert, Arizona, USA, May.
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Jack Dykinga / Great horned owl (Bubo virginianus) chick nesting in Saguaro cactus (Carnegiea gigantea), Santa Catalina Mountains, Arizona, USA, May.
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) in flower at night, with The Milky Way behind, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.
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Jack Dykinga / Frost damaged Saguaro cactus (Carnegiea gigantea) with sunset light shining through limbs. South Maricopa Mountains Wilderness, Arizona, USA, March 2015.
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Jack Dykinga / Low angle view of Saguaro cactus (Carnegiea gigantea) with twisted lowered arms drooping to the ground, a result of frost damage. Honey Bee Canyon, Oro Valley, Arizona, USA. February.
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) with twisted arms at sunset, with Ajo Mountains in the background, Arizona, USA.
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Jack Dykinga / Saguaro Cactus (Carnegiea gigantea) with flower cluster emerging from the tip of its limb, Saguaro National Park, Arizona, USA.
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Jack Dykinga / Sunset light on twisted Saguaro cactus (Carnegiea gigantea) Sonoran Desert National Monument, Arizona, USA, April.
