Sierra Nevada Bighorn
407 West Line St.
Bishop CA 93514
Sierra Nevada Bighorn Sheep In Yosemite
- 3/14/2013 A mountain lion killed two adult bighorn, one ewe and one ram, in Lundy Canyon. Heavy predation in this canyon could have devastating effects for this small herd. At this time of year, bighorn sheep are the only significant prey species present in the area. CDFW biologists will closely monitor this situation.
- 01/30/2013 Bighorn noted wintering in Excelsior Peak area in Yosemite National Park.
- 10/27/12 New GPS collars deployed (4 adult females, 1 adult male.
- 08/01/2012 S187s GPS collar drops off for retrieval.
- 07/29/2012 Hikers observed 11 bighorn above Summit Lake on the boundary of Yosemite National Park.
- 07/27/2012 A fourth yearling, a ram, is added to the count. With four yearlings accounted for, we know that all of last year�s lamb survived the winter!
- 07/11/2012 A third yearling, a female, is added to the count!
- 07/5/2012 A multi-agency group of surveyors observed a total of 34 bighorn (12 Adult ewes, 2 yearling ewes, 11 lambs, and 9 adult rams) including all of the collars in the population.
View seasonal maps as annotated video below
or as a photo set on Flickr.com.
Lundy Canyon in Fall (beaver dam in foreground)
Landsat - Satellite Images
The Landsat program offers the longest continuous global record of the Earth's surface by capturing images from space. United States Geologic Survey (USGS) has been using this system since the 1970's. Landsat imagery is taken approximately every two weeks. The image resolution is based on a 30m x 30m pixel size.The data are used for a wide variety of scientific investigations. Our program uses this information to describe snow cover. Images show snow (turquoise), bare ground (brown), and vegetation (green). Images were selected to show differences in habitat use patterns at various times during the year.