I made it to Morton NWR this morning. Folks are encouraged to feed the birds there. Amazing. Using the principles on Alan Murphy's Songbird Set-Up Guide I created this Black-capped Chickadee image while in the process of freezing my feet into twin blocks of ice :)
Canon 800mm f/5.6L IS lens with a 25mm Extension tube and the EOS-1D MIII. ISO 125. Evaluative metering +1 1/3 stops: 1/250 sec. at f/11 set manually. Fill flash at -1 stop.
The biggest problem all day was head angle; the darned birds were always looking down at the seed :)
Don't be shy; all comments welcome.