Wood Pigeon (Columba palumbus) Pausing during feeding. Wigan Lancashire, UK Wood Pigeon (Columba palumbus) Pausing during feeding. A habit all birds have to check for predators, pausing briefly during activity especially bathing and feeding. Rather than feed their young insects, pigeons feed them a milk formed from sloughing off fluid-filled cells in the crop lining and is more nutritious than human or cow's milk