Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1973
Black Tern
Chlidonias niger
July 14 Woodland Sugar Ponds, Yolo Co. Calif: 1 breed-plum. ad.
July 21 Whitewater Rivermouth, Salton Sea, Riverside Co., Calif: 300 in all plumages
South end Salton Sea, Imperial Co., Calif: 400
July 22 Imperial Valley, Imperial Co., Calif: 300 in plowed field, most sitting on ground, others hovering over the field
Aug. 31 Woodland Sugar Ponds: 1 non-breed plum.
Sep. 14 North end Salton Sea, Riverside Co.: 100
South end Salton Sea: 200