Get close with migrating birds, and let everyone know you're on their side. This lovable tee features 14 species, many of which are readily seen in the U.S., especially during spring and fall migrations. Bird migration is an epic phenomenon, and birds need all the help they can get on their dangerous journeys, some of which take them across continents. What can you do? Turn out your lights at night, because most birds migrate nocturnally, and artificial light attracts and confuses them. Also make your windows are bird-safe, because birds can't see glass and many die from building collisions.