The Juniper Titmouse has a call and a song that resemble some aspects of their cousins, the chickadee (especially the Mountain Chickadee). You can hear a clip of these songs and calls here; scroll down a bit to the “typical voice” section.
You can learn more about this adorable species from the page that covers our monitoring of Juniper Titmice that use our nest boxes; click here read more and see photos.