The western yellow bat is uncommon in California, known only in Riverside, Imperial, and San Diego cos. California records occur only in spring, summer, and fall. Feeds on flying insects. Forages over water and among trees.
Flight is slow and steady.
Capable of rapid flight but fairly maneuverable. Has been captured roosting under palm trees. Probably forms small maternity groups in trees and palms. No data found. Probably requires water.