There are many birds that are active
nocturnally. Some, like
owls and
nighthawks, are predominantly nocturnal whereas others do specific tasks, like migrating, nocturnally.
Dunn, Jon L.; Alderfer, Jonathan (2006). "Owls". In Levitt, Barbara (ed.). National Geographic Field Guide to the Birds of North America (fifth ed.). Washington D.C.: National Geographic Society. pp. 256–265.
ISBN978-0-7922-5314-3.
There are many birds that are active
nocturnally. Some, like
owls and
nighthawks, are predominantly nocturnal whereas others do specific tasks, like migrating, nocturnally.
Dunn, Jon L.; Alderfer, Jonathan (2006). "Owls". In Levitt, Barbara (ed.). National Geographic Field Guide to the Birds of North America (fifth ed.). Washington D.C.: National Geographic Society. pp. 256–265.
ISBN978-0-7922-5314-3.