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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Oriol Alamany / Black-winged Snowfinch (Montifringilla adamsi), at around 4,300 metres, Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India
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Oriol Alamany / Black-winged Snowfinch (Montifringilla adamsi) on the snow in Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February
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Oriol Alamany / Flock of Black-winged snowfinch (Montifringilla adamsi) in flight, Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February
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Oriol Alamany / Robin Accentor (Prunella rubeculoides) in Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February
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Oriol Alamany / Robin accentor (Prunella rubeculoides) in Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February
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Oriol Alamany / Flock of Black-winged Snowfinch (Montifringilla adamsi) in flight, Spiti valley, Cold Desert Biosphere Reserve, Himalaya mountains, Himachal Pradesh, India, February
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Ann & Steve Toon / Sociable weaver (Philetairus socius) nest in quiver tree (Aloidendron dichotomum) Quiver tree forest, Keetmanshoop, Namibia.
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Jen Guyton / Nest of sociable weavers (Philetairus socius) hangs from a thorn tree in the Namib Desert, Namibia. February 2015
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Jen Guyton / Nest of sociable weavers (Philetairus socius) hangs from a thorn tree in the Namib Desert, Namibia.