What is the function of the gizzard in pigeon body?

What is a group of gulls called? What German poem can you compare 'Vultures' to by Chinua Achebe? How do penguins care and feed for there young? What does the ivory billed woodpecker look like? What is the value of an 1858 flying eagle cent? True or flase birds use wings and feathers to fly so all birds can fly? Would you most likely to see a kookaburra in the pacific states? Length of bat wing? What does it mean when an African Grey lifts up its talon? What are male wood ducks called? How are bats and birds related? How do you feed a duck a banana? What is the fleshy center of the muscle called? Is whistled onomatopoeia? Is it bad that your finger smells like infedemine? What does lovely weather for ducks mean? How do molting penguins obtain enough protein to produce new feathers? What number do you play when a bird poops on you? How many syllabels in the word scratch? What is the full form of emu?