Jack Dykinga / Lightning storm with rainbow over Saguaro cactus (Carnegiea gigantea) near Redrock, Arizona State Trust, Sonoran Desert, Arizona. September 2015. Long exposure with lightning trigger.
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Jack Dykinga / Border wall with razor wire at the Mexican / United States border in Arizona, where the newer taller sections of the border wall pushed by President Trump are being erected in the environmentally sens...
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Jack Dykinga / Saguaro cacti (Carnegia gigantea) at sunset, during a summer rain storm. Saguaro National Park, Sonoran Desert, Arizona, USA, August. Digital composite.
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John Cancalosi / Great horned owl (Bubo virginianus) chick stretching its wings in nest in a Saguaro (Carnegiea gigantea), is groomed by its parent, Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Rain storm in the Sonoran desert, with Saguaro cacti (Carnegiea gigantea), near Tucson, Arizona. 2018.
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Jack Dykinga / Twisted Saguaro cactus (Carnegiea gigantea) with the Milky Way and distant glow of Phoenix lights, Sonoran Desert National Monument, South Maricopa Mountains Wilderness, Arizona, USA. September 2017.
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Jack Dykinga / Saguaro (Carnegiea gigantea) cacti at night with the Milky Way . Desert National Monument, Arizona, USA, September.
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Jack Dykinga / Twisted Saguaro cactus (Carnegiea gigantea) Catalina State Park, near Tucson, Arizona, USA, September.
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Jack Dykinga / ARCHIVED SG - Duplicate 10/10/2017. Saguaro cactus (Carnegiea gigantea) at sunset, with drooping frost damaged limbs, South Maricopa Mountains Wilderness, Sonoran Desert National Monument, Arizona...
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Jack Dykinga / Saguaro cacti (Carnegiea gigantea) in bloom with Foothill paloverde (Cercidium microphyllum) Sonoran Desert National Monument, Arizona, USA, April.
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Donald M. Jones / Gila Woodpecker (Melanerpes uropygialis) feeding on Saguaro (Carnegiea gigantea) cactus flower, southern Arizona
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Donald M. Jones / Curve-billed Thrasher (Toxostoma curvirostre) feeding on Saguaro (Carnegiea gigantea) cactus flower, southern Arizona
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Jack Dykinga / Lightning storm with rainbow over Saguaro cactus (Carnegiea gigantea) Avra Valley, Saguaro National Park, Tucson Mountains, Arizona, USA, August 2015. Long exposure with lightning trigger.
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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.
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Jack Dykinga / Twisted and emerging limbs of Saguaro cacti (Carnegiea gigantea) Sonoran Desert near Tucson, Arizona, USA
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Jack Dykinga / Penstemon (Penstemon sp) in flower against Saguaro cactus (Carnegiea gigantea) Finger Rock Canyon, Santa Catalina Mountains, Arizona, USA
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Jack Dykinga / Saguaro cacti (Carnegiea gigantea) at sunset in the foothills of the Santa Catalina Mountains, near the Sutherland Wash, Catalina State Park, Arizona, USA
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Jack Dykinga / Close-up of spines of the trunk of a Saguaro cactus (Carnegiea gigantea) Caboza Prieta National Wildlife Refuge, Arizona, USA
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Jack Dykinga / Rainbow at sunset over desert hillside with Saguaro cacti, Table Mountain in the distance, Pusch Ridge Wilderness, Coronado National Forest, Santa Catalina Mountains, Arizona, USA
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Jack Dykinga / Saguaro cacti (Carnegiea gigantea) Sand Tank Mountains, Barry M. Goldwater Range, Arizona, USA
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Jack Dykinga / Saguaro cactus (Carnegia gigantea) lit up at night with star trails, Cabeza Prieta National Wildlife Refuge, Arizona, USA
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Jack Dykinga / California poppies (Eschscholzia californica) flowering between the "ribs" of a dead Saguaro cactus (Carnegiea gigantea) Barry M. Goldwater Range, Arizona, USA
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) twisted by exposure to frost, Maricopa Mountains Wilderness, Sonoran Desert National Monument, Arizona, USA
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Jack Dykinga / Saguaro cacti (Carnegiea gigantea) silhouetted at sunrise, Sand Tank Mountains, Sonoran Desert National Monument, Arizona, USA
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Jack Dykinga / Close up of Saguaro cactus (Carnegiea gigantea) and Teddybear cholla (Cylindropuntia bigelovii) in evening light, Tucson Mountain Park, Arizona, USA
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Jack Dykinga / Close-up of the twisted limbs of a freeze-damaged Saguaro Cactus (Carnegiea gigantea), with new limbs emerging. Sonoran Desert National Monument, Arizona
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) in a summer storm at sunset, with a rainbow in the background, Maricopa Mountains, Sonoran Desert National Monument, Arizona, USA
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Jack Dykinga / Saguaro Cactus (Carnegiea gigantea) with new flowers emerging at the tip of its limb, Tucson Mountains, Saguaro NP, Arizona, USA
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Jack Dykinga / Saguaro Cactus (Carnegiea gigantea) at dawn with new flowers emerging at the tip of its limb, Saguaro NP, Arizona, USA
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) at sunrise, Sonoran Desert National Monument, Arizona, USA
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) silhouetted against the sunset in the Silver Bell Mountains, Saguaro NP, Arizona, USA
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Jack Dykinga / Night sky with trails of stars rotating around the North Star with a Saguaro Cactus (Carnegiea gigantea) silhouetted in the foreground, Cabeza Prieta NW Refuge, Arizona, USA
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Jack Dykinga / Signal Hill petroglyphs at sunset with Saguaro Cacti (Carnegiea gigantea) and Tucson Mountains in the background, Saguaro National Monument, Arizona, USA
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) with detail of the cactus spines, Tucson Mountains, Saguaro NP, Arizona, USA
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Jack Dykinga / Saguaro Cactus (Carnegiea gigantea) with new arm emerging from its trunk, Cabeza Prieta NW Refuge, Arizona, USA
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) at sunrise, Cabeza Prieta NW Refuge, Sonoran Desert, Arizona, USA
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Jack Dykinga / Teddy Bear Cholla (Opuntia bigelovii) and Saguaro Cacti (Carnegiea gigantea) lit by the afternoon light in the Sand Tank Mountains, Sonoran Desert National Monument, Arizona, USA
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Philippe Clement / Saguaro cactus {Carnegiea gigantea}, Organ Pipe Cactus National Monument, Arizona, USA
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Philippe Clement / Saguaro cactus {Carnegiea gigantea} showing fruit, Organ Pipe Cactus National Monument, Arizona, USA May 2007
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Jack Dykinga / Trunks of Saguaro Cacti (Carnegiea gigantea) at sunrise, Cabeza Prieta National Wildlife Refuge, Arizona. January 1st 2000
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Jack Dykinga / Saguaro Cacti (Carnegiea gigantea) silhouetted against night sky with star trails, time exposure for 5 hours after midnight, Cabeza Prieta National Wildlife Refuge, Arizona. New Years 2000
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Yva Momatiuk & John Eastcott / Gila Woodpecker (Melanerpes uropygialis) nesting in Saguaro (Carnegiea gigantea) in desert, spring, Sonoran Desert National Monument, Arizona
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Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona
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Jim Brandenburg / Mexican Golden Poppy (Eschscholzia glyptosperma) field with Saguaro (Carnegiea gigantea) cactus, Organ Pipe Cactus National Monument, Arizona
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Claudio Contreras / Ocotillo (Fouquieria splendens) and Saguaro (Carnegiea gigantea) at sunset in Sonoran Desert. El Pinacate Biosphere Reserve, northwest Mexico.
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Claudio Contreras / Sonoran Desert with Teddy-bear cholla (Cylindropuntia bigelovii), Saguaro (Carnegiea gigantea) and Brittlebush (Encelia farinosa). El Colorado volcano in background. El Pinacate Biosphere Reserve, nor...
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Claudio Contreras / Sonoran Desert with Saguaro (Carnegiea gigantea) and Teddy-bear Cholla (Cylindropuntia bigelovii) cactic, alongside Ocotillo (Fouquieria splendens). El Pinacate Biosphere Reserve, Sonoran Desert, nort...
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Claudio Contreras / Sonoran Desert on volcanic soil with Teddy-bear cholla (Cylindropuntia bigelovii), Saguaro (Carnegiea gigantea) and ocotillo (Fouquieria splendens). El Tecolote volcano, El Pinacate Biosphere Reserve,...
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Jack Dykinga / Yellow paloverde (Cercidium microphyllum) flowering amongst Saguaro (Carnegiea gigantea). In foothills on north side of Santa Catalina Mountains, Coronado National Forest, Arizona, USA. May 2019.
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Jack Dykinga / Yellow paloverde (Cercidium microphyllum) flowering amongst Saguaro (Carnegiea gigantea). In foothills on north side of Santa Catalina Mountains, Coronado National Forest, Arizona, USA. May 2019.
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) blooming in early morning. Saturn, jupiter and milky way in night sky. Sonoran Desert National Monument, Arizona, USA. May 2019.
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John Cancalosi / House sparrow (Passer domesticus) male flying from nest in Saguaro (Carnegiea gigantea) cactus. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran desert,...
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John Cancalosi / House sparrow (Passer domesticus) male at nest in Saguaro (Carnegiea gigantea) cactus cavity. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran desert, A...
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John Cancalosi / House sparrow (Passer domesticus) female feeding chicks at nest in Saguaro (Carnegiea gigantea) cactus. Non-native bird species that competes with native species for nesting cavities in cacti. Sonoran...
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John Cancalosi / Great horned owl (Bubo virginianus) and chicks on nest. Gilded flicker (Colaptes chrysoides) excavating nest. On Saguaro (Carnegiea gigantea) cactus, Sonoran desert, Arizona, USA.
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John Cancalosi / Great horned owl (Bubo virginianus) adult and two chicks on nest in Saguaro (Carnegiea gigantea) cactus. Sonoran desert, Arizona, USA.
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John Cancalosi / Great horned owl (Bubo virginianus) preening two chicks in nest in Saguaro (Carnegiea gigantea) cactus, Sonoran desert, Arizona, USA.
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John Cancalosi / Great horned owl (Bubo virginianus) with two chicks on nest in Saguaro (Carnegiea gigantea) cactus, Sonoran desert, Arizona, USA.
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John Cancalosi / Great horned owl (Bubo virginianus) adult and two chicks on nest in Saguaro (Carnegiea gigantea) cactus. Sonoran desert, Arizona, USA.
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John Cancalosi / Great horned owl (Bubo virginianus) adult and two chicks on nest in Saguaro (Carnegiea gigantea) cactus. Sonoran desert, Arizona, USA.
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Jack Dykinga / Saguaro cacti (Carnegia gigantea) at sunset, during a summer rain storm. Saguaro National Park, Sonoran Desert, Arizona, USA, August.
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Jack Dykinga / Arizona ash trees (Fraxinus velutina) along Romero Creek with a background of mature Saguaro cacti (Carnegiea gigantea) on the background ridges. Catalina State Park, Arizona, USA, December.
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John Cancalosi / Great horned owl (Bubo virginianus) grooming chick in nest in a Saguaro (Carnegiea gigantea), Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Great horned owl (Bubo virginianus) chick moving around in nest in a Saguaro (Carnegiea gigantea), with parent nearby, Sonoran Desert, Arizona, USA, May.
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John Cancalosi / Great horned owl (Bubo virginianus) and three chicks sleeping in nest in a Saguaro (Carnegiea gigantea), Sonoran Desert, Arizona, USA, May.
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Tim Fitzharris / Saguaro (Carnegiea gigantea) cacti, Ajo Mountains, Organ Pipe Cactus National Monument, Arizona
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Jack Dykinga / Solitary saguaro cactus (Carnegiea gigantea), Sonoran Desert, Arizona, USA. Piccacho Peak State Park visible in the distance, with heavy rains at sunset.
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Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus with holes made by woodpeckers, Tucson Mountains, Arizona
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea)flowers, Santa Catalina mountain foothills. Sonoran Desert. Coronado National Forest, Arizona, USA, May.
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Jack Dykinga / Saguaro cactus (Carnegiea gigantea) flowering, Santa Catalina Mountain Foothills, Colorado National Forest, Arizona, USA, May.
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Jack Dykinga / Twisted Saguaro cactus (Carnegiea gigantea) Catalina State Park, near Tucson, Arizona, USA, September.
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Jack Dykinga / Twisted Saguaro cactus (Carnegiea gigantea) Catalina State Park, near Tucson, Arizona, USA, September.
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Jouan Rius / Rainbow over Saguaro cacti (Carnegiea gigantea), Organ Pipe Cactus (Stenocereus thurberi) and Foothills Palo Verde tree (Cercidium microphyllum), Organ Pipe Cactus National Monument, Sonoran Desert, A...
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Jouan Rius / Saguaro cacti (Carnegiea gigantea) and Organ Pipe Cactus (Stenocereus thurberi), Organ Pipe Cactus National Monument, Sonora Desert, Arizona, USA. April 2014.
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Jouan Rius / Gila woodpecker (Melanerpes uropygialis) female feeding on nectar in Saguaro cactus blossom (Carnegiea gigantea), Lost Dutchman State Park, Arizona, USA, April 2014.
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Jouan Rius / Gila woodpecker (Melanerpes uropygialis) male feeding on nectar in Saguaro cactus blossom (Carnegiea gigantea), Lost Dutchman State Park, Arizona, USA, April 2013.
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Jouan Rius / Curve-billed Thrasher (Toxostoma curvirostre) feeding on nectar in Saguaro cactus blossom (Carnegiea gigantea), Lost Dutchman State Park, Arizona, USA, April.
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Jouan Rius / Saguaro cactus (Carnegiea gigantea) buds and flowers in bloom, Lost Dutchman State Park, Arizona, USA, April.
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Daniel Heuclin / Gila Woodpecker (Melanerpes uropygialis) eating Saguaro fruit (Carnegiea gigantea) Arizona, USA, June.
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Daniel Heuclin / Gila Woodpecker (Melanerpes uropygialis) eating Saguaro fruit (Carnegiea gigantea) Arizona, USA, June.
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Daniel Heuclin / Saguaro (Carnegiea gigantea) with fruit split open, Catalina State Park, Arizona, USA, June.
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Daniel Heuclin / Saguaro (Carnegiea gigantea) with fruit split open, Catalina State Park, Arizona, USA, June.
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Daniel Heuclin / Gila Woodpecker (Melanerpes uropygialis) eating Saguaro fruit (Carnegiea gigantea) Arizona, USA, June.
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Ingo Arndt / Saguaro cactus (Carnegiea gigantea) fruits, Saguaro National Park, Arizona, USA.
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Ingo Arndt / Cactus Wren (Campylorhynchus brunneicapillus) perched on Saguaro cactus (Carnegiea gigantea), Saguaro National Park, Arizona, USA.
