Required Quanitity of Food for pigeon

     
Food of pigeon

Water

Most lost birds are hungry and thirsty. Water is necessary before all else. Since pigeons drink by suction, any water container should be at least 1 in. (2.5 cm) deep. An open container, i.e., a dish, an old margarine container tub, etc., is best. While a thirsty bird may drink immediately, it also may not. A bird that's gone without water for a while is sometimes so exhausted, it doesn't even realize that water is in front of it, especially if the water container you use is different from what it is familiar with. A trick I've often used is to trickle a few drops of water from on high into the container to make a splashing sound. When they hear that, most birds will invariably head to drink. If a bird looks really exhausted, Gatorade or other proprietary sports drink may be added to the water. A teaspoon or two per cup (250 ml) of water will help replenish electrolytes.

Food

Pigeons are grain eaters. While park pigeons will eat bread, most domestic birds have been raised on a multi-grain mixture and have never seen a slice of it. In fact, they would likely ignore it as possible food.  Try feeding them something else from around the house.  Popcorn (maize), rice, white or brown, split peas, barley, buckwheat (kasha), canary seed, etc., are all good first options to feed a lost bird with. THESE GRAINS SHOULD NOT BE COOKED OR POPPED BUT FED RAW. Water should also be provided since pigeons normally drink immediately after eating.