SanDiegoSteve, I agree with you about the stories behind getting the shot are very interesting and useful to all of us. So, here goes my story; but first a few technical details: Nikon D5, 600mm, 1/1600, f6.3, ISO 500, manual with auto ISO, Exposure comp -0.3; Sigma 150-600 lens, hand held. The photo was taken in my backyard.
Short story; right place, right time.
Longer story: We live on a large, semi-rural space in San Diego County. We have a ton of birds and bird activity here so at the beginning of each day I usually position myself in the backyard to watch and photograph birds as they go about their morning routine. This particular morning was overcast and grey; perfect lighting conditions. No harsh shadows or flat light to contend with. I'm familiar with most of the bird calls/songs in my area so I can track down a bird without having to see it. I had been watching and photographing a group of goldfinches foraging when I heard the distinctive call (more like a grunt) of a humming bird that sounded close by. This hummingbird was just to the left of where the goldfinch troop was. I could see that he was perched on a branch and was very still (for a hummingbird). It almost looked like he was laying down on the branch which I had never seen a hummingbird do. I quickly popped off a few bursts with the one I posted being the best of the lot.
So that's it. You know the saying "I'd rather be lucky than good"? Well, that was my situation that particular morning.