45ac3812_des_Peninsula_Land_Conservancy__Notes_on_the_species
[Species] coast prickly pear (Opuntia littoralis) [Notes on the species] 
Yellow flowers of the cactus appear in the summer and are followed with reddish fruit in the fall. Coastal cactus wrens make their home in large stands of coast prickly pear. They hop about, impervious to the spines on the cactus pads, building numerous basket-shaped nests in the stand.
Education & Research: Native Plants | Palos Verdes Peninsula Land Conservancy
Notes on the species