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Wingspan: 9 - 10"; Body length: 1 1/2 - 2"
Diet: small flying insects
This is one of the smallest bats in the US, weighing approximately .1 ounce (about the same as a penny). In arid regions, it is usually found near water. It locates concentrations of insects, where its slow, maneuverable flight allows it to catch several insects at a time. When feeding near water, it tends to fly close to the bank, unlike the Yuma bat, which forages over open water.
The California bat is one of the more stable species of bats in Arizona. This may be because it roosts in a variety of shelters, and does not usually return to the same roost every day.