Jan 19
Bark Beetles: Forest Pests or Ecosystem Engineers?
19 Jan, 2017. 0 Comments. Services, Uncategorized. Posted By: Jeff Davis
For animals roughly the size of a grain of rice, bark beetles can exact a disproportionate effect on the landscapes they inhabit. In the face of a changing climate, these tiny insects are calling an entire philosophy of forest management into question, redirecting the conversation from artificial control by harvesting timber to natural control by maintaining genetic diversity. A short trip east of Fresno, California to the western Sierra’s Shaver Lake basin helps illustrate the impact bark beetles can have on a forest. As you leave the oak woodland of the foothills and climb into the conifer forest surrounding Shaver Lake,…
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.…
Oct 22
Colibri Welcomes Howard Clark
22 Oct, 2016. 0 Comments. Uncategorized. Posted By: Jeff Davis
Colibri is pleased to welcome Howard Clark to our team of scientists. Howard brings over 20 years of professional wildlife and research experience. He is certified by the Ecological Society of America as an ecologist and by The Wildlife Society as a Certified Wildlife Biologist®. Howard's work as an ecological consultant has focused on the fauna and ecosystems of California. He has conducted dozens of inventories, surveys, and assessments for blunt-nosed leopard lizard, burrowing owl, San Joaquin kit fox, and giant kangaroo rat among many others. He strengthens our capabilities with his experience with these San Joaquin Valley species and…
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…