Special guests will be at Friday’s Night Hike through Sodalis Nature Preserve. The Night Hike will begin at 6 p.m. Sept. 20 at the parking lot at Sodalis Nature Preserve.

Representatives from Titley Electronics, maker of the Anabat acoustic bat detector, will give a presentation on bat echolocation at around 6:30 p.m. at the amphitheater site at Sodalis. The talk will be followed by an opportunity to watch the out flight at Sodalis Nature Preserve and use bat detectors to see the echolocation sequences produced by the bats.

The Night Hike will last about two hours, participants can stay with the group or return to the parking lot on their own.

Gale Rublee, Hannibal Parks & Recreation nature educator, will lead the hike. She has previously been a naturalist and teacher at Shaw Nature Reserve in St. Louis and has been a storyteller and actor. She is the coordinator and teacher for the Bluff City Theater Youth Education Theater Initiative.

The Night Hikes are free but reservations must be made by calling Hannibal Parks & Recreation at 221-0154 or emailing mlrichards@hannibal-mo.gov.