X. californica performs floral sonication to obtain pollen. They do this by gripping the poricidal anthers with their mandibles and contracting their flight muscles, rapidly vibrating their body and the flower's anthers, releasing the pollen onto the abdomen and legs of the bees. This process allows for pollination to happen. The vibration frequency is different throughout their body; their head's natural vibration is 87 Hz, and their abdominal terga is 163 Hz.X. californica can adjust its frequency to different types of flowers. Temperature regulation X. californica inhabit the deserts of southwestern North America and endure high temperatures while they forage. Foraging in these high temperatures may cause thermoregulatory problems for the bee, which is increased by the heat released from the muscular activity needed for their flight. Unlike other insects, they can fly in temperatures as high as 48°C, which would be deadly for others, but can fly for a short period of time. On the other hand, they can not withstand temperatures lower than 10-15 °C. Reproduction Mating behavior X. californica has many types of mating behaviors. These include hovering near sites and chasing away other males, exhibiting female-defense polygyny. Multiple males may try to grasp the female when she returns to the nest, then a struggle between the males may happen to be able to grasp the female midair to copulate; in particular, they look for virgin females because females only mate once in their lifetime. After a few seconds, they separate, and the male returns to its hovering area. Other males may patrol more than one nest and shuttle throughout many sites in a day. If they are not patrolling the nests, then they may exhibit scramble competition at flowering sites, where they hope to catch a female. The males are territorial, but they do not have a stinger. Nesting X. californica carve their nest in wood. They dig into the wood using their sharp mandibles while they vibrate their body- they do not eat the wood. They dig a tunnel in substrates such as live or dead wood and hollow stems of the Yucca and Agave plants, then dig to the right and left, creating a T-shape nest. Their nest's success depends on the available pollen and nectar found in the area. A suitable nest substrate is needed for their reproduction and survival; the quantity of stalks in the area is important in determining their total