If you're considering using a scope for birding have a look at this thread (it runs to 22 pages) and has some interesting info. Average pics to begin with but they improved markedly. I think they're out to over 5m in 35mm equivalent glass now using a skywatcher ED80 .

Extreme digiscoping!!!
http://www.birdforum.net/showthread.php?t=100519
Now, where can I get me some macro tubes and an AF confirm chip