Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Hoffmeister
1940
Bats
Jan. 26
8 p.m. Along the Dana street - side of the Presbyterian church, saw 5+ bats flying around the southwest-most floodlight used to illuminate the side of the building. The bats flew practically only within the limits of the range of light and none of them flew away to any great distance, but soon returned to the lighted area. All the bats were flying around the southwest corner of the church near that part of the building I created some 100+ cone out some months ago. They flew up against the stone building + would alight for a second, crawl from 2" to 6" up the stone, + then fly again. Occasionally they would alight just below the opening (where I saw the 100+ cone out) + then crawl into it. Sometimes one would come back out immediately or remain for a period. At various times (from 8 to 8:13 p.m.), 3 or 4 bats were often seen at 1 time in the rays of the light. Some of them were definitely Antrozous, but one or 2 may have been a Tadarida, for they appeared smaller + different flight (can not be positive about this though). There were at least 5, and possibly 2 or 3 more.
By 8:13 p.m., they all had gone beneath the piece of material on the building. The weather is clear + warmer tonight following an all day rain yesterday and part of today (morning).