Yellow Rumped Warbler

I think this is the name of this bird but if anyone knows for sure, let me know :)

 

This was taken back in 2005 with my Canon 20D and the Canon 100-400 IS L lens. This guy was following me through the park that day and jumped from tree to tree and then on this fence. I think he was curious about the 'big' lens....lol.

Done