I've written about the Oceanside Marine and Nature Study Area in previous posts here, and here. It's a great place for bird photography, especially on cloudy days. On my last visit a few days ago, a good number of the birds were resting on natural perches (downed branches). This coupled with the nice clean backgrounds of the distant foliage made for a fun morning of shooting. I used the Canon 40D, and the 400mm at f5.6 for all of the shots.