Rapped to be the owner of the bat barn we were looking for. The barn is just west of the main street of Immersion, many droppings in the attic but probably several weeks old. Owner said that only a few weeks ago there were “not hundreds but thousands of bats” roosting there. When we looked at 4 p.m. there was only one, a banded female Corynorhinus who escaped. Went back to the Golden barn 1 mi. S. of Immersion and caught one banded female Corynorhinus and about 6 Tadarida before dark. After supper (night hazy & overcast) found Myotis yumanensis as before. Also a few M. californicus. Checked again at midnight and 4 a.m., but only a few more yumanensis. Came home then around the north rim of the Bay. Stopped at several battry-looking places, but no bats. One very promising cluster of ledges near Black Point had only owl pellets.