one time i saw a pile of dead geese at the dump and several bloody-headed seagulls absolutely shredding them to pieces. might as well have been a pack of hyenas, they were fighting over organs and making gutteral noises before plunging their entire heads into the geese to tear out another bite....they'll also eat big crabs by flying them up and dropping them onto parking lots or rocks or cars or whatever hard surface it takes to incapacitate the crab just enough so they can flip it over, rip its claws off like little paper towels and turbo peck out the insides. never turn your back on a seagull