Bats in Phoenix

A different kind of backyard bird. We live on a small urban lake in Glendale Arizona. I call it “Lake Effluent” because it’s part of the golf course water system.
Every night at dusk small bats begin to swoop up skybugs just over our heads. The bats are smallish, maybe 5 inches in body length or less, flying lazy arcing zig zags low in the sky. Sometimes they skim the water.
Last night I was out trying to snap flash pics of them to post here. Nothing good to show yet but I’ll keep trying.
So we’ve wondered where the little scamps roost during the daylight hours. No caves nearby that we’re aware of. Do they live in attics like back home in Detroit? Not too many attics around our neighborhood. Turns out that many bats live in palm trees, and are disrupted or even killed during trimming.
They also live in other trees, we’ve got quite large neighboring mexican fan palms, Sissoo, and Ficus. I suspect the Ficus and the Sissoos as the homes of these bats because the palms are trimmed regularly (and they seem to almost fly out of the semi deciduous trees).
Southern Yellow Bats? Not sure but I’m thinking most likely.
Whatever, these little bundles of flying fur are amazing.