https://birdcast.info/science-to-action/lights-out/

Cornell Lab
Migration Alert! Tonight thru Saturday, expect over 300 MILLION birds in the air each night. Bright lights can disorient them—make a difference by turning off non-essential lights and making windows safer. #LightsOutForBirds #LightsOutTexas #DarkSkies #LightPollutionAwareness

RT @CornellBirds@twitter.com

Wow! @DrBirdCast@twitter.com projects HALF A BILLION BIRDS will be in the air tonight as they migrate south. Could be great birding for Saturday's #OctoberBigDay! Also great time to turn out nonessential lighting and check windows for bird safety: https://birdcast.info/science-to-action/lights-out/ #LightsOutTexas