Birdnote

When we watch birds in flight, they’re often seen against a backdrop of clouds. Clouds have many different types and are listed in the International Cloud Atlas. The asperitas cloud was first described by citizen-scientists and has now been incorporated into the official atlas.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.