Which colour of the rainbo cant be seen?

How do you know when bats are flying in the sky? When was Wild Ducks Flying Backward created? What is the difference between a wood duck and a water duck? How do the birds of paradise avoid competition? Are feather beds still made today? What consonant sound is heard repeatedly in the first stanza of the eagle? What does the California Quail stand for? How do you spell penguin in french? What eagle lives in the desert? Will bird control netting harm the birds? What is the best bait to use in catching a super large snapper turtle that eats fully grown ducks? What is teale? What bird has a black and white body and a thick red beak and is about 2.5 foot tall? What do it mean when a bird is tied in a tree with fishing line? Why do eagles have to be taught to fly? How do you prevent pigeons from returning to lay eggs? If Mr Jones's peacock laid an egg in Mr Brown's garden who is the rightful owner of the egg? Is a red tailed black cockatoo a vertebrate? What would happen if there were no vultures? How many babies does a peacock give birth to in one day?