By Will Stone Liverpool is being invaded by giant seagulls that locals have started calling “XL gullies”. These huge birds look as if they’ve been hitting the gym after feasting on dropped food and rubbish around the area. The gulls are flocking to the city to feast on the growing amount of discarded litter and food waste. People living in and visiting the city have expressed their shock at coming face-to-face with the giant birds. Debbie O’Reilly said: “On Old Hall Street they take your food from you as soon as they see the Greggs bag. They come from nowhere, swoop and it’s gone.” Phil Murphy…