
So, I thought, we have hummingbirds at home. What's stopping me from going out in my backyard and doing this. So we "snuck" out two vials (Don't worry, we donated money to the park.)
I sat in my back year for about 5 minuets after I removed their regular feeders. I wore a bright red shirt because I figured they would be more attracted to it. Low and behold, they came. One after another, fighting over the prize that I was holding in my hand!
If you would like to try this at home, I would recommend doing it soon (before they migrate)
You can use the vials like I did, or, i have seen people use caps. Also, I recommend wrapping whatever you use in red tape or pipe cleaners.
Good luck!