One of the reasons so many people love the fall hawk migration is that hawks take flight during the day, so we can watch them as they journey south. Most other neotropical migrants are not so obliging, migrating instead under cover of darkness.

These birds can’t be seen but, if you listen carefully, they can be heard – and, every autumn, the night sky comes alive with the sound of migration as songbirds join geese, ducks, shorebirds, and others in an epic exodus that is one of the great natural wonders of the world. For more than 10 years, Eric Masterson has been recording the flight calls of birds that pass unseen over his yard at night. Join him for this special evening to listen, learn, and marvel at the wonder of it all.

8 to 9:30 p.m. at the Harris Center. Space is limited, and registration is required. For more information, including questions about accessibility, contact Eric.