When photographing hummingbirds, I've found that the click of the camera, and/or the flash can attract them, particularly the dominant hummingbird at that specific feeder. My theory is that because he associates the flash with the the appearance of other birds at the feeder, he learns to show up to defend it when there's a flash. Since he's there, he takes a drink before leaving. Because I've mainly observed this at Madera Canyon in the spring, it was pretty easy to figure this out because it was generally the same species bird that showed up after a 'boredom' flash I would flash if I had not had any birds for a while. Sometimes, the feeder would be primarily 'owned' by a broadbill, at other times/locations/years it might be a magnificent. Once accustomed to the flash, the birds aren't usually startled even though my flashes are quite close. (1 or 2 feet from feeder.) A high pitched whistle might produce a similar territorial response. I'd be tempted to try a dog whistle and see if they react quite well to that. Visit my link to www.gregscott.com to see my very high resolution hummingbird photos. They're not all high resolution, but most of the recent ones (taken in the spring) are quite high in resolution. Here is a link that might be useful: See my high resolution photos here.

I am sure I have posted this too many times, but I had great success with rhododendrons by scraping the bottom of branches near the ground, pegging them down and covering the scraped part with soil, leaving the end leaves showing. A year later, the new plant could be severed with a shovel from the parent. A mat of roots had grown where I had scraped the stem.

Female rubythroat. It would be very rare to have any other kind of hummer in the Mid-Atlantic, although they do show up in very low numbers with some regularity. Female rubythroats lack the male's bright red throat.

It was probably in torpor. If it didn't wake up after an hour from being warmed up, then it probably died in the midst of a torpor because the temperature dropped too low for too long and she didn't make it. However, it takes usually just over an hour for them to come out of torpor, which makes them vulnerable during this time, so please don't bury them until you're sure they're truly "gone". Torpor is a mild form of hibernation hummingbirds undergo when the temperatures drop. Usually, they wake up after the air warms up again, and the first thing they have to do is eat quickly.