18,869 Works

Spruce and hemlock woods at 3,000 ft.

Harry S. Swarth

Marmot rock slide (trees mainly white fir and sugar pine)

Joseph S. Dixon

Detail of construction of muskrat-beaver fence

Joseph S. Dixon

MInk tracks in mud, natural size, male

Joseph S. Dixon

Ptarmigan, Willow - female standing, side view

Joseph S. Dixon

Ptarmigan, Willow - chick with head out behind mother's wing

Joseph S. Dixon

Badger front view

Joseph S. Dixon

Mink stomach contents #65, litter of 4 young meadow mice

Joseph S. Dixon

Rock-slides at timberline; campsite of museum expedition

Harry S. Swarth

Chickaree running back on limb after dropping cone

Joseph S. Dixon

Mountain sheep - young ram (sky-lined)

Joseph S. Dixon

Chickaree kitchen midden on stump (vertical)

Joseph S. Dixon

Mountain sheep - 2 rams chewing cuds, asleep

Joseph S. Dixon

Castle Rock

Joseph S. Dixon

Mountain sheep - 2 males on rock

Joseph S. Dixon

Mountain sheep - 1 female looking straight at camera

Joseph S. Dixon

Muldrow Glacier - lateral moraine

Joseph S. Dixon

'Cottonwood, poplar, and meadow association'; habitat of valley woodchuck

Harry S. Swarth

Mule deer doe head with antlers in velvet

Joseph S. Dixon

Kangaroo rat (Dipodomys) starting off

Joseph S. Dixon

Black-tail buck, head of 4 pinter (side view)

Joseph S. Dixon

Chickaree husking cone of yellow pine

Joseph S. Dixon

Woods of Yellow PIne and Douglas Fir

Harry S. Swarth

Cony and Marmot habitat in rocks, Wilson Phalarope habitat in marsh

Joseph S. Dixon

Chickaree kitchen midden on stump (vertical)

Joseph S. Dixon

Registration Year

  • 2020
    1
  • 2019
    5
  • 2018
    3
  • 2016
    1
  • 2015
    4
  • 2014
    3
  • 2013
    18,852

Resource Types

  • Image
    18,869