Jack Dykinga / Hairy bird's foot morning glory (Ipomoea leptotoma) flower over Prickly pair (Opuntia sp) Catalina State Park, near Tucson, Arizona, USA, August.
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Floris van Breugel / Beavertail cactus (Opuntia basilaris) in otherwise stark desert, Alabama Hills, Owen's Valley, California, USA May
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Michio Hoshino / Galapagos Land Iguana (Conolophus subcristatus) and Prickly Pear (Opuntia sp) cactus, Galapagos Islands, Ecuador
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Karine Aigner / Western diamondback rattlesnake (Crotalus atrox) coiled up at base of Prickly pear cactus (Opuntia sp). Texas, USA. April.
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Jack Dykinga / Santa Rita prickly pear (Opuntia santarita) cactus flower with new growth spines on pad. Santa Catalina mountains foothills, Upper Sonnoran Desert, Arizona, USA. May.
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Nick Upton / Walled fields of Prickly pear / Barbary fig (Opuntia ficus-indica) on volcanic soil, formerly harvested for Cochineal insects (Dactylopius coccus), with Monte Corona volcanic peak in the background, n...
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John Chan / Mourning dove (Zenaida macroura) perched on a Coastal pricklypear (Opuntia littoralis), avoiding the spines as it takes flight, Southern California, USA, April.
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Nick Hawkins / Galapagos prickly pear (Opuntia echios), a vulnerable species. Isabela Island, Galapagos.
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Nick Hawkins / Common cactus finch (Geospiza scandens) perched on Prickly pear (Opuntia). San Cristobal Island, Galapagos.
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Tui De Roy / Blue-footed booby (Sula nebouxii) with two chicks at nest. Prickly pear (Opuntia sp) in background. Punta Vicente Roca, Isabela Island, Galapagos.
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Tui De Roy / Nazca booby (Sula granti), pair amongst Prickly pear (Opuntia sp) cacti at coast. Wolf Island, Galapagos. August 2016.
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Tui De Roy / Nazca booby (Sula granti) chick under Prickly pear cactus (Opuntia sp) on cliff. Wolf Island, Galapagos. August 2016.