Field notes, v569
Page 303
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Cogswell 1950 Empidonax traillii June20 - Soda Springs, 6750 ft. Nevada Co., Calif. - 2 singing ("weeps- pa-deed") from willow thickets along outlet stream below I. Van Norden dam. 1 of them also flew up to telephone wire 12+ ft. above tops of willows & sang from there several times. - Jul10 - 1+ still singing here. June24 - Cisco Grove, 5650 ft., on S fork Yuba River, Placer Co., Calif. 2 Empidonax sp? foraging from lower branches of black cottonwoods and bare ground below them - probably this species (they were silent). Another sang from the dense riparian woodland & thickets about 300 ft. E of this spot. - In this latter spot on July 5 also singing. June30, July19 E end Lake Van Norden, 6767 ft. Placer Co., Calif. - 3 singing "weeps-pa-deed" from tall willow thickets along mouth of Sugar Bowl Creek. (broad open meadow nearby). July2 July3, 4 "Cogswell Meadow", 7000 ft., 1.2 mi. SSW Donner Pass, Placer Co., Calif. 1 singing from willow thickets which were leafless 2 weeks ago, but are now quite green canopied. July8 Cisco Grove [see above] - 1 singing from riparian woodland. July22 2 singing here today; there probably are 2 pairs, 1 in each of the 2 denser patches of woodland (about 8 & 20 acres, respectively). July23 Kings Beach, 6250 ft. N end Lake Tahoe, Placer Co., Calif. cottonwoods & 1 singing from aspens along small stream July17-31 "Cogswell Meadow" [see above] - 1 singing regularly from restricted portion of the willow thickets. Soft pit Aug3 pair seen together here (I was singing, other called Aug4 1 singing; Aug11 - sang just once [last time Aug14-21 Donner Pass region - several noted in riparian thickets Empidonax (probably this sp)]