Kirkendall-Spring / Contorted trunks of Aspen trees (Populus tremula) in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Daniel Heuclin / Rio Grande Cottonwood tree (Populus fremonti wislizenii) on a sand "pedestal" White Sands National Park. New-Mexico, USA, August 2009
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Jack Dykinga / Havasu Falls with Fremont cottonwood trees (Populus fremontii) Havasupai Reservation, Arizona, USA
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Jack Dykinga / Havasu Falls cascade behind Fremont cottonwood trees (Populus fremontii) glowing in reflected canyon light, Havasupai Reservation, Arizona, USA
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Jack Dykinga / Willow, Cottonwood and Aspen trees on the banks of the Oxbow Bend, Snake River, at dawn, Teton mountain range in the background, Grand Teton National Park, Wyoming, USA
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Jack Dykinga / Havasu Falls with travertine formations in the river creating spillways, and Fremont cottonwood trees (Populus fremontii), dawn, Havasupai Reservation, Arizona, USA
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Tim Fitzharris / Cottonwood (Populus sp) trees in autumn, Teec Nos Pos, Arizona
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Tim Fitzharris / Havasu Creek which is lined with Cottonwood trees, being fed by one of its three cascades, Havasu Falls, Grand Canyon, Arizona
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Tim Fitzharris / Cottonwood (Populus sp) trees in autumn, Carson Valley, Nevada
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Tim Fitzharris / Cottonwood (Populus sp) trees in autumn near Maroon Bells, Colorado
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Jim Brandenburg / Cottonwood (Populus sp) tree in prairie
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George Sanker / Cottonwood trees (Populus sargentii) on the Lamar River, Yellowstone National Park, Wyoming, USA, October 2011
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Peter Cairns / Stream running through bleached Cottonwood trees in geothermal area, Yelowstone National Park, Wyoming, USA, September 2008
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Peter Cairns / Abstract of trunks of bleached cottonwood trees in geothermal area, Yelowstone National Park, Wyoming, USA
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Kirkendall-Spring / Trunks of Aspen trees (Populus tremula) casting shadows in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Kirkendall-Spring / Trunks of Aspen trees (Populus tremula) casting shadows in snow, near Brighton in Big Cottonwood Canyon, Utah, USA, February 2010
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Kirkendall-Spring / Mount Millicent above Brighton Ski area in Big Cottonwood Canyon, Utah, USA, February 2010
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Colin Monteath / Willow (Salix sp) and Cottonwood (Populus sp) trees in fall colors with Lake Pukaki and Mount Cook, Mackenzie Country, South Canterbury, New Zealand
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Yva Momatiuk & John Eastcott / Maple (Acer sp) and Cottonwood (Populus sp) trees in fall colors, Zion National Park, Utah
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Diane McAllister / Large flock of Cedar waxwings (Bombycilla cedrorum) descending upon a Cottonwood tree in a Reno backyard after a snowstorm. Nevada, USA, December
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Diane McAllister / Three Great horned owl chicks (Bubo virginianus) with their beaks open begging for food in their nest in a Cottonwood tree. Suburban northwest Reno, Nevada, USA, April
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Daniel Heuclin / California Fan Palm (Washingtonia filifera) Cottonwood Spring, Joshua's Tree National Monument, California, USA, September.
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Daniel Heuclin / California Fan Palm (Washingtonia filifera) Cottonwood Spring, Joshua's Tree National Monument, California, USA, September.
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Matthias Breiter / Cottonwood (Populus sp) trees with new leaves, Stikine River, Alaska
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Daniel Heuclin / Rio Grande Cottonwood tree (Populus fremonti wislizenii) on a sand "pedestal" White Sands Natinal Monument. New-Mexico, USA, August 2009
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Jack Dykinga / Willow, Cottonwood and Aspen trees on the banks of the Oxbow Bend, Snake River, at dawn, Teton mountain range in the background, Grand Teton National Park, Wyoming, USA
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Rob Tilley / Hoarfrost on Cottonwood Trees (Populus deltoides), Lamar Valley, Yellowstone NP, Wyoming, USA
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Rolf Nussbaumer / RF- Trunks of Quaking Aspen trees (Populus tremuloides) in autumn. Rocky Mountain National Park, Colorado, USA. (This image may be licensed either as rights managed or royalty free.)
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Konrad Wothe / Fremont Cottonwood (Populus fremontii) with fall color, Bosque del Apache National Wildlife Refuge, New Mexico
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Tim Fitzharris / Rio Chama with Cottonwood (Populus sp) trees and other riparian species growing along banks, New Mexico
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Jack Dykinga / Narrowleaf cottonwood trees {Populus angustifolia} covered in ice in winter landscape, Grand Teton NP, Wyoming, USA
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David Welling / Red rock formations with Cottonwood (Polus deldoides) trees in foreground, Dixie National Forest, Utah, USA
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Philippe Clement / Balsam poplar / Black cottonwood trees {Populus balsamifera} in autumn colours, Denali NP, Alaska, USA
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Niall Benvie / Cottonwood trees (Populus deldoides) with early snow Lamar Valley, Pennsylvannia, USA
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Niall Benvie / Cottonwood trees with early snow (Populus deldoides) Pennsylvania, USA.
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Tim Fitzharris / Maple (Acer sp) and Cottonwood (Populus sp) trees in autumn, Zion National Park, Utah
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Tim Fitzharris / Fremont Cottonwood (Populus fremontii) trees growing in the Chihuahuan Desert at White Sands National Park, New Mexico
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Tim Fitzharris / Fremont Cottonwood (Populus fremontii) tree single tree in desert, White Sands National Park, Chihuahuan Desert New Mexico
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Tim Fitzharris / Cottonwood (Populus sp) fall foliage with Magdalena Mountains behind, New Mexico
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Tim Fitzharris / Cottonwood (Populus sp) and Cranes, autumn foliage, Bosque del Apache National Wildlife Refuge, New Mexico
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Tim Fitzharris / Cottonwood (Populus sp) trees and Willows, fall foliage, Bosque del Apache National Wildlife Refuge, New Mexico
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Tim Fitzharris / Cottonwood (Populus sp) trees, fall foliage, Carson Valley, Nevada
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Tim Fitzharris / Mt Spry at 5,823 foot elevation with the Virgin River surrounded by Cottonwood trees, Zion National Park, Utah
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Tim Fitzharris / Mt Spry at 5,823 foot elevation with the Virgin River surrounded by Cottonwood trees, Zion National Park, Utah
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Tim Fitzharris / Maple (Acer sp) and Cottonwood (Populus sp) autumn foliage, Zion National Park, Utah
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Tim Fitzharris / Maroon Bells at Maroon Lake with Cottonwood (Populus sp) trees, Colorado
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Tim Fitzharris / Havasu Creek which is lined with Cottonwood trees, being fed by one of its three cascades, Havasu Falls, Grand Canyon, Arizona
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Tim Fitzharris / North Fork of the Virgin River flanked by Cottonwood (Populus sp) trees, Zion National Park, Utah
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Tim Fitzharris / Cottonwood (Populus sp) tree and Coyote bush (Baccharis vanessae) with sand dunes, Monument Valley, Arizona
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Michael & Patricia Fogden / Raccoon (Procyon lotor) in cottonwood tree, Chihuahuan Desert, Mexico
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Gerry Ellis / Fremont Cottonwood (Populus fremontii) tree in Chihuahuan Desert, White Sands National Park, New Mexico
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Colin Monteath / Willow (Salix sp) and Cottonwood (Populus sp) trees in fall colors with Lake Pukaki, Mount Cook, and Mount Tasman, Mackenzie Country, South Canterbury, New Zealand
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Yva Momatiuk & John Eastcott / Cottonwood (Populus sp) trees in fall colors along creek, Zion National Park, Utah
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Yva Momatiuk & John Eastcott / Cottonwood tree branches against sandstone walls, Grand Staircase-Escalante National Monument, Utah
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Michael Quinton / Bald Eagle (Haliaeetus leucocephalus) group congregating in cottonwood trees nea Chilkat River to feed on salmon, Alaska
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Tim Fitzharris / Cottonwood (Populus sp) trees, fall foliage, Carson Valley, Nevada
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Michael & Patricia Fogden / Bobcat (Lynx rufus) two immature bobcats in Cottonwood tree, Chihuahuan Desert, Mexico
