The little mountain chickadee is often a photographic subject for me in winter. This one posed for a portrait view behind a rail covered with snow. Then, it perched on the feeder hook as the little nutchatches often do. The mountain chickadees seems comfortable with me and the camera as near as about 8 ft. Any closer and I send them flying into the nearby trees. Both of these images were captured with a 100 to 400 lens from about 10 feet.
I'm not really a birder, I just like the challenge of photographing them. I have to keep the field guides to birds at hand to look up any unfamiliar species. I also search for information about my feathered subjects online. In a recent search, I learned that the mountain chickadee stays only a short time near the nest where it hatched. It then moves to a new location and spends the rest of it's life there. No migrating away from winter weather for these little birds. No wonder they seem so appreciative of the seeds I put out for them.