What can't a pigeon eat?

Will Geese and Ducks fight? How deep should a duckling waterer be? Do birds ever fly across the Kaaba? Is an owl a vertebrae? What state do owls live in? What are some signs that your budgies are going to breed? Why is your parakeet losing his feathers? Some possibilities why two continents that may once fit together have either gaps or overlaps? How high is pigeon mountain? Can you get pregnant from a flamingo? Is a hawk a producer or consumer? Is a Canada goose called a migratory bird? Will the smell of cat urine repel birds? What is the name of A bird that lays in other birds nest? How long does it take for fruit flies to turn into adults? Is an emu a herbivore or an omnivore? What is the difference between an owl and ostrich? Can you get a picture of the owl? What bird lays brown spotted pink eggs? Why are there toucans on the Guinness label?