Endangered owls, cared for at the Calgary Zoo, now returned to the wild

Workers with the Wilder Institute/Calgary Zoo will be monitoring the lives of 20 burrowing owls in the wild over the next while to make sure they thrive. (Supplied) Workers with the Wilder Institute/Calgary Zoo will be monitoring the lives of 20 burrowing owls in the wild over the next while to make sure they thrive. (Supplied)

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