It's mating season in Phoenix!
That's a good thing if you happen to be an elk -- a not-so-good thing if you happen to be human. Thmale elk can get a bit rowdy when they are trying to woo the ladies. And newcomers to the region are apparently not accustomed to such mating rituals.
Eligible bachelors strut their stuff by uttering a high-pitched come-on line. It works in the singles bar, but not so much in the suburbs. Elk bugling is the official term and the locals say it sounds alot like a human screaming -- hence the calls to the local sheriffs department.
In case you're planning a family outing, elk mating season lasts a few more weeks.
Have fun kids.