As I've said before, even with just a little bread, seagulls become very easy subjects to photograph at 55 mm.
click to enlarge, or see it on Flickr
Shutter Speed: 1/1250
Focal Length: 55 mm
I found that if you spend enough time with burst mode and servo AF, you'll get the seagulls in a good pose in at least one photo. I didn't even have to crop this one. I'm very happy with how this one turned out.