Nov 28
Investigating Genetic Relationships among North American Merlin Subspecies
28 Nov, 2016. 0 Comments. Surveys, Uncategorized. Posted By: Jeff Davis
The merlin (Falco columbarius) is a small yet sturdy falcon. It is slightly larger than the more familiar American kestrel (Falco sparverius). It can be differentiated from the kestrel by its lack of prominent facial markings and more aggressive and powerful flight. In North America, it breeds mainly in the boreal forests of Canada and Alaska. It occurs in California as a passage migrant and winter resident, mainly from September through April. Although most individuals winter in North America, some migrate as far south as Venezuela, Colombia, Ecuador, and northern Peru. This species is fast and agile on the wing.…
Jul 6
California’s Great Gray Owl
6 Jul, 2016. 0 Comments. Services, Surveys, Uncategorized. Posted By: Jeff Davis
The great gray owl is the largest owl in North America. Well, sort of. At about 27 inches, it is certainly the longest. Despite its large dimensions, though, it is comparatively lightweight, weighing nearly 25% less than the great horned owl and nearly 60% less than the snowy owl. As its name suggests, the great gray owl is gray overall, but that gray is admixed with black, white, and brown. It also has a conspicuously large facial disk with concentric rings of dark gray and a prominent white “bow-tie” below its yellow eyes and beak.   In California, the great…
Feb 28
Happy Birthday, Joe!
28 Feb, 2016. 0 Comments. Services, Surveys, Uncategorized. Posted By: Jeff Davis
Joseph Grinnell was born on this date (February 27) in 1877. Grinnell was California’s preeminent naturalist.   Following Grinnell’s death on May 29, 1939, Don McLean, biologist with the California Department of Fish and Game, wrote, “Dr. Grinnell’s knowledge of birds and animals of California and the West was as complete as one person could possibly be capable of assimilating. He was as interested in a small mouse from Death Valley as in a Roosevelt elk from Humboldt County.”   Grinnell was the editor of the Condor for 34 years—far longer than any other editor—and Director of the Museum of…
Apr 22
It was a busy week
22 Apr, 2015. 0 Comments. Services, Surveys. Posted By: Jeff Davis
We carried out live-trapping surveys for the federally and state-listed as endangered San Joaquin kangaroo rat on the valley floor in Kings County, evaluated the effects of vegetation management on habitat for the state-listed as threatened and fully protected limestone salamander in the Merced River Canyon, ensured biological resource protection during hazardous tree removal in Los Padres National Forest, assessed the effects of trenching activities on habitat for the federally and state-listed as endangered and fully protected blunt-nosed leopard lizard on the western edge of the valley floor in Kern County, conducted nesting bird and invasive plant surveys…