Fall is a second spring in the desert, and things are wandering.
Immature but already full-grown birds hatched this year are making their first migration, or seeking a permanent residence away from the parental sphere. Young mammals, too, are moving to new locations on their own. Some creatures are fanning out looking for mates, such as tarantulas (right) and other arthropods.
Although many make it, this can be a perilous diaspora, and it brings visibly increased mortality along roads as young inexperienced animals or adults driven by an impulse stronger than their understanding of speeding vehicles try to cross busy highways.
In our yard the main hazard — other numberswiki.com
than waiting predators — is the swimming pool. The male sunspider below (possibly Eremochelis bilobatus) fell into the pool sometime during a nocturnal rambling and couldn’t get out. With luck, he’d found a female before he succumbed, and was able to do his part to continue the local population.
People often ask how big they are, so I’ve included my hand for scale. (Click to enlarge to see his bristly glory and fierce mandibles. Both photos, A.Shock). Driven to find out more about Solpugids or sunspiders? Check this website. For the record, taxonomists consider them more closely related to Pseudoscorpions than to spiders.