Search results for Mature

California Brown pelican in flight, La Jolla, wings outstretched, spreading wings wide to slow in anticipation of landing on seacliffs. Immature winter plumage colors.
Species: Brown, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 38927  

The Lamar herd of bison grazes, a mix of mature adults and young calves.
Species: American bison, Bison bison
Location: Lamar Valley, Yellowstone National Park, Wyoming
Image ID: 13123  

The Lamar herd of bison grazes, a mix of mature adults and young calves.
Species: American bison, Bison bison
Location: Lamar Valley, Yellowstone National Park, Wyoming
Image ID: 13132  

Bull elk, antlers bearing velvet, Gibbon Meadow. Elk are the most abundant large mammal found in Yellowstone National Park. More than 30,000 elk from 8 different herds summer in Yellowstone and approximately 15,000 to 22,000 winter in the park. Bulls grow antlers annually from the time they are nearly one year old. When mature, a bulls rack may have 6 to 8 points or tines on each side and weigh more than 30 pounds. The antlers are shed in March or April and begin regrowing in May, when the bony growth is nourished by blood vessels and covered by furry-looking velvet.
Species: Elk, Cervus canadensis
Location: Gibbon Meadows, Yellowstone National Park, Wyoming
Image ID: 13154  

Mature male brown bear boat walks in tall sedge grass.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19172  

Brown bears fighting or sparring. These are likely young but sexually mature males that are simply mock fighting for practice.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19177  

Mature male coastal brown bear boar waits on the tide flats at the mouth of Silver Salmon Creek for salmon to arrive. Grizzly bear.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19202  

Brown bears fighting or sparring. These are likely young but sexually mature males that are simply mock fighting for practice.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19250  

Mature male coastal brown bear boar waits on the tide flats at the mouth of Silver Salmon Creek for salmon to arrive. Grizzly bear.
Species: Brown bear, Ursus arctos
Location: Lake Clark National Park, Alaska
Image ID: 19252  

Juvenile California brown pelican in flight. Note its drab brown colors, it is not mature enough to assume the more colorful plumage of adults. The wingspan of the brown pelican is over 7 feet wide. The California race of the brown pelican holds endangered species status.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 20046  

Juvenile bald eagle, second year coloration plumage, closeup of head and shoulders, snowflakes visible on feathers. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22642  

Eared Grebes on Lake Hodges, immature / non-mating pair, San Diego.
Location: Lake Hodges, San Diego, California
Image ID: 36778  

Juvenile or immature California brown pelican in flight with wings spread wide, slowing to land on ocean seacliffs in La Jolla.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 38690  

Brown pelican immature plumage, likely second winter coloration approaching breeding plumage, on cliff over the ocean.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 38705  

Juvenile bald eagle, calling vocalizing, side profile view, second year coloration plumage, closeup of head, snowflakes visible on feathers. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22685  

Juvenile bald eagle, translucent nictating membrane drawn completely across eye, second year coloration plumage, closeup of head, snowflakes visible on feathers. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22693  

Immature bald eagle (center) raises wings and vocalizes as another eagle (left) lands on a wooden perch. Three bald eagles on a perch. Immature plumage coloration. Note immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22702  

Juvenile bald eagle, second year coloration plumage, head, shoulders and upper body, snowflakes visible on feathers. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22704  

Juvenile bald eagle in flght, wings raised as eagle slows to land, juvenile coloration plumage. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22712  

Juvenile bald eagle in flight, first year plumage coloration, wings raised, brown beak. Immature coloration showing white speckling on feathers.
Species: Bald eagle, Haliaeetus leucocephalus, Haliaeetus leucocephalus washingtoniensis
Location: Kachemak Bay, Homer, Alaska
Image ID: 22718  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25880  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25881  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25891  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25892  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25895  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25900  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25906  

Roosevelt elk, adult bull male with large antlers. This bull elk has recently shed the velvet that covers its antlers. While an antler is growing, it is covered with highly vascular skin called velvet, which supplies oxygen and nutrients to the growing bone; once the antler has achieved its full size, the velvet is lost and the antler's bone dies. This dead bone structure is the mature antler, which is itself shed after each mating season. Roosevelt elk grow to 10' and 1300 lb, eating grasses, sedges and various berries, inhabiting the coastal rainforests of the Pacific Northwest.
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California
Image ID: 25910  

Brown pelican immature plumage, likely second winter coloration approaching breeding plumage, on cliff over the ocean.
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California
Image ID: 38707