Juvenile Glaucous-winged Gulls are taking flight over downtown Seattle. In Chicago, young Ring-billed Gulls are heading for Lake Michigan. And before long, juvenile Herring Gulls will be soaring over the Atlantic Ocean. More and more, some gulls are raising their families in the city. They nest on flat, sunny rooftops that are generally inaccessible to humans. When chicks like this Western Gull fledge, they’re soft brown, and won’t have adult plumage – that flashy white and gray or black crispness – until they’re four years old.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.ult plumage – that flashy white and gray or black crispness – until they’re four years old.