Field notes, v1378
Page 281
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Journal 117 R.E. Johnson 1968 Nor. 2 Saguhen Cr., Calif. to Peavine Mtn, Nevada & Return (cont.) because of our presence. The approach was timed with a noticeable darkening of the sky due to very dense black clouds plus the low sun. Finally the birds entered the shaft at 4:35PM. No additional birds arrived. At 4:45 or 4:50PM we approached the shaft with flashlights. Both birds flew out almost immediately after we turned our lights down the shaft. I cannot be sure that they weren't aroused by our approach rather than by the flashlights but it appeared as though they took flight after we reached the shaft & that they were only perched 30 ft or so, down. One flew out fairly rapidly & easily, the other fluttered upward in a more labored manner & took much longer. It lit near the opening & I'm 90% certain it was [illegible] a bird of the Cascade Race (L.T. littoralis). Gray appeared to cover the whole side of the head or perhaps only a fraction short of this. We walked back to the car & shortly the birds reentered the shaft. At 5:05PM it was nearly too dark to see so we started the car to leave. Again the birds flew from the shaft, but shortly reentered. While we had been parked near the shaft jeeps & pickups with hunters passed us at least a dozen times & one stopped to talk. There was