The Andean-Cock-of-the-Rock sounds like a cross between a chainsaw and a squealing pig. The national bird of Peru, male birds of this species sport a splendid bright red plumage along with a head crest reminiscent of a knight’s battle helmet. Females choose their mate from among a group of bickering males, then build a nest high on a cliff wall.More info and transcript at BirdNote.org. Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.