What's the best way to inquire as to whether or not a place has positions available? I'm wondering if our local zoo is hiring but it doesn't have anything on its website about employment. There is a contact email form and also a phone number and an address. Should I send an email first? A phone call? Or just send my resume with a nice cover letter that says something along the lines of "Hi, I want a job, I just want to know if you have any positions open" (phrased more professionally of course). I'm not really sure how to go about contacting them.