Any chance that you could post a picture so we can see you in your blind? ..................................... get it? I don't suppose your camera can capture the infrared ... you know ... a heat signature. I understand that a camera's sensor can be re-calibrated in the shop to restore its sensitivity to the red end of the spectrum, thereby giving it greater utility for deep sky astrophotography. Nebula are often rich in hydrogen, a rather important ingredient in star formation, and hydrogen appears red in a deep sky time-exposure. I wonder how that is done. Without the adjustment to the sensor it is rather blind to red-glowing hydrogen. What does any of this have to do with hummingbirds and their ability to avoid the camera? Well, nothing really. I live on a tangent and even with that vital trajectory I often end up completely off course. Buzzzz.