Rolf Nussbaumer / Northern mockingbird (Mimus polyglottos) adult fighting with Golden-fronted Woodpecker (Melanerpes aurifrons) female over Texas Prickly Pear Cactus (Opuntia lindheimeri) Dinero, Lake Corpus Christi, S...

Rolf Nussbaumer / Daring Jumping Spider {Phidippus audax} adult on fruit of Texas Prickly Pear Cactus (Opuntia lindheimeri) Rio Grande Valley, Texas, USA, June

Cyril Ruoso / Prickly pear cactus (Opuntia lindheimeri) thorns, South Texas, USA, April.

Cyril Ruoso / Prickly pear cactus (Opuntia lindheimeri) in flower, at night, South Texas, USA, April.

Rolf Nussbaumer / Green jay (Cyanocorax yncas) adult landing on Texas prickly pear cactus (Opuntia lindheimeri) Dinero, Lake Corpus Christi, South Texas, USA.

Rolf Nussbaumer / Golden-fronted woodpecker (Melanerpes aurifrons) male feeding on fruit of Texas prickly pear cactus (Opuntia lindheimeri) Dinero, Lake Corpus Christi, South Texas, USA.

Rolf Nussbaumer / Digital composite of Cardinal, Mockingbird, Green jay, House finch, Pine warbler, Golden-fronted woodpecker, Chipping sparrow, birds landing on Texas prickly pear cactus (Opuntia lindheimeri), Dinero,...

Rolf Nussbaumer / Dahlia hedgehog cactus (Echinocereus poselgeri) in flower and Texas Prickly Pear Cactus (Opuntia lindheimeri). Laredo, Webb County, South Texas, USA, April.

Rolf Nussbaumer / Curve-billed Thrasher (Toxostoma curvirostre) perched on Texas Prickly Pear Cactus (Opuntia lindheimeri) Dinero, Lake Corpus Christi, South Texas, USA

Rolf Nussbaumer / Wildflower field with Texas Prickly Pear Cactus (Opuntia lindheimeri) Squaw Weed (Senecio ampullaceus) Texas Bluebonnet (Lupinus texensis), Three Rivers, Live Oak County, Texas, USA, March 2007

Rolf Nussbaumer / Wildflower field with Texas Prickly Pear Cactus (Opuntia lindheimeri) Huisache tree (Acacia farnesiana) Squaw Weed (Senecio ampullaceus)Texas Bluebonnet (Lupinus texensis),Three Rivers, Live Oak Count...

Rolf Nussbaumer / Ruby-throated Hummingbird {Archilochus colubris} male flying to feed on Texas Prickly Pear Cactus flower (Opuntia lindheimeri) Hill Country, Texas, USA