I followed this guy for a little while today and managed to get a couple of OK shots.
The 1st he was in a telephone pole, I had to crop a bit to cut out all the wires and get something decent.
Pentax K10D ,Tokina 400mm f/5.6 AT-X
1/1000s f/8.0 at 400.0mm iso400
In this second one the lighting was really tough. It was an overcast with very flat but extremely bright lighting (fresh 10" of snow was reflecting all that bright light). I had to use a +1.5 Exposure Compensation even with spot metering to avoid under exposure. This is another pretty heavy crop, I'm hoping it doesn't look over processed..
Here is a link to the unedited original to show how much I had to crop
juvredtail_unprocessed.jpg photo - palmor photos at pbase.com
Pentax K10D ,Tokina 400mm f/5.6 AT-X
1/1000s f/8.0 at 400.0mm iso400
And a near 100% crop just for fun