Depends what you mean by "scraps," both quantity and quality. A bowlful of stuff like potato peels, cucumber parings, moldy tomatoes, a watermelon rind, some lettuce leaves turning brown, yesterday's oatmeal, stale bread, a wilted salad, leftover mashed potatoes, the green beans the kids wouldn't eat, crusty week-old birthday cake... no. You'll have some desperately hungry, sorry-looking birds, but as others have said, they won't keep you in eggs or add much more than flavor to a soup because they won't be healthy. If you can't afford to feed them the optimum nutrition they need and deserve, it would be the kind, humane, mature and responsible thing to re-home them to someone who can and will.