The term 'ONE WITH A BIG FOOD BILL' can be solved with the 6-letter word 'TOUCAN'. Toucans are tropical birds native to Central and South America, and are known for their large, colorful bills. They are omnivorous, meaning they eat both plants and animals, and their diet consists of mostly fruits, insects, and small reptiles. As a result, toucans have a relatively large food bill compared to other birds.