first time ever saw bat on Mt. Tam. took photo where he was flying but not in photo. was a small bat, light-brown or tawny colored. flew somewhat slowly. initially thought was a large moth until had a good look at him as he flew by a couple times. was near a creek along Troop 80 trail close to Van Wyck grove
Photographed on US Forest Service land in the Laguna Mountains east of San Diego. This site features a small concrete cattle trough that bats of a variety of species come to for nightly drinks. Corynorhinus townsendii is designated a California Department of Wildlife species of special concern.
The first image was taken at 11:38 pm and the second at 12:45 am. I was not able to determine if they were the same individual, possibly not. I monitored bat activity at this site acoustically and with a night vision monocular (ITT Night Enforcer 160 3rd Generation night vision monocular).
The third image is a screen shot of a sonogram of a COTO's ultrasonic echolocation calls recorded adjacent to the water source at 12:14 am, approximately half way between the two photographs. The recording was made using a Wildlife Acoustics Echo Meter Touch 2 microphone attached to an iPad Mini4 table running the Echometer Touch application. It was post-processed in Kaleidoscope Pro software on a Windows 10 laptop.
All images are ©2020 Donald Endicott. All rights reserved. Please contact me for permission to reproduce.
See them a lot flying in the evening and at night. This one was curled in a corner on the ground. Thought it was dead, but put it in a bucket and it started moving it's wings and making squeaking/chirping noises and cleaning it's wings. It got defensive and bit the scooper when it was put in the bucket. Hope it isn't hurt.
Dead at Badwater Basin in the parking lot. Likely the heat.
took a video at dusk, more than one bat flying around. Sure hope they are eating the mosquitoes plaguing me. I know it's poor quality and screenshots from a video, but wanted to share