What is the name of cries of sparrow?

Does a male duck lay unfertilized eggs? What is the meaning of doves following you around? Is cactus safe for cockatiels? What time should you go to sleep? Which TV detective lived in the King Edward Hotel with a cockatoo named Fred? What does the Flamingo eat? Do hawthorn maggot flies and apple maggot flies belong to the same species? Are pigeons intelligent? What do owls look like without feathers? I soar but cannot fly What am I? Do bald eagles have camoflage? What does spanish galapago mean in english? Where are owls located? What is the food of a burrowing owl? Can a ferret eat an owl? How much does a baby puffin weigh? What possibly extinct bird is called the grail bird and the lord god bird? What preys on kiwi? How long has the bald eagle been the US national birdnd why is the bald eagle cald that it is not bald and when did or who did create the national bird to be a bald eaglealso 2 other birds as state? What bird flaps their wings 300 times a second?