Heh heh "skyrats." "Dump chickens" lol! I'd give them a little more credit than that, though. Gulls saved Utah from a grasshopper/locust plague, after all.
http://en.wikipedia.org/wiki/Miracle_of_the_gulls
Years ago, before there was a permit requirement, I rehabbed injured gulls or raised young, orphaned gulls and other wild animals. Guess I should have asked to be "grandfathered" as a wildlife rehabber when the laws were made.
I agree with Speceider. Gulls are difficult to keep as they are active scavanging/fishing birds who need to fly. They can drink and swim in freshwater but are really adapted to natural saltwater or brackish. To raise them from egg or chick to adulthood; you need to liquify a "baby formula" of raw fish and eggs, and a turkey baster to squeege it into their throats without choking. Older birds must be fed raw fish such as smelt and other small species, a variety of crustaceans (I used to live right on the ocean and would catch amphipods and isopods in tidepools) and an avian vitamin/mineral supplement.
Babies become very dependent, and will follow their parents around until the adult gulls refuse to feed them, or drive them away. In captivity, it seems to be unnatural to perpetuate this dependent behavior. Oh, one other thing: gulls vomit when upset. It's not quite as bad as the projectile carrion-vomit of vultures, but it's pretty nasty.