In response to Gentoo question about egg destruction. Sea World probably obtained a state permit to remove the eggs before they proceeded with the egg removal. As for private businesses, it is illegal to tamper with nest once there is a sign of an egg or fledgling, hence the current court case in San Pedro.
There is a proper way to request aid if you need to remove a nest. Please contact Fish and Game or an appropriate wildilfe rehabiliation center for advice on how to proceed. If you would like to here more Gentoo, you can contact me at my email address.
In response to the original thread, I know it is hard to reframe from feeding waterfowl or gulls, but as you can see they become a nuisance and are dealt with accordingly. If you truly want to keep these guys around, spread the word STOP FEEDING THEM! People will have a much better relationship with these species if you could just curb your behavior, and tell a friend. The birds will go back to their original feeding behavior, and they will stop pestering people in cities. It can be done, it was done in mine, and it worked. The ducks are no longer attacked, the gulls went back to the fields to find mice, and the gulls stopped scaring the children. The additional benefit was the Canada Geese and wild ducks just use the pond now to rest before they head off to the nearby wetlands.