Have you considered infrared for heat lights? They might sleep through those!

At 01:00 PM 12/10/2009, you wrote:
>Message: 2
>Date: Wed, 9 Dec 2009 12:36:51 -0800
>From: <diane_weinstein at msn.com>
>Subject: [Tweeters] Re: Hummingbird Question - Uupdate
>To: "Tweeters" <tweeters at u.washington.edu>
>Message-ID: <SNT112-DS12F2734517672327A994928D8E0 at phx.gbl>
>Content-Type: text/plain; charset="iso-8859-1"
>
>It is midnight. Do you know where your hummers are?
>
>Last night I did. At midnight the male hummer was still sitting on
>the feeder under the porch light. I kept waiting for him to go to
>sleep or a state of mini-hibernation before turning out the
>light. Instead his eyes were wide open and he was fluffing up his
>feathers, flapping his wings, sipping the food, and even flying
>around the porch a bit. Fearing that the light was keeping him
>awake and he would freeze to death, I finally turned it off at 12:30.
>
>This morning he did not seem any worse for the late night as he was
>chasing the female hummer around the yard.
>
>Tonight the light goes out much earlier for the both of us.
>
>Diane Weinstein
>Issaquah