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Male elk bugling during the fall rut. Large male elk are known as bulls. Male elk have large antlers which are shed each year. Male elk engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females.
Image ID: 19693
Species: Elk, Cervus canadensis
Location: Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA | California Brown Pelican head throw, stretching its throat to keep it flexible and healthy. Note the winter mating plumage, olive and red throat, yellow head.
Image ID: 30336
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | California Brown Pelican head throw, stretching its throat to keep it flexible and healthy.
Image ID: 28347
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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Magnificent frigatebird, adult male on nest, with throat pouch inflated, a courtship display to attract females.
Image ID: 16725
Species: Magnificent frigatebird, Fregata magnificens
Location: North Seymour Island, Galapagos Islands, Ecuador | A brown pelican preening, reaching with its beak to the uropygial gland (preen gland) near the base of its tail. Preen oil from the uropygial gland is spread by the pelican's beak and back of its head to all other feathers on the pelican, helping to keep them water resistant and dry.
Image ID: 30326
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | California brown pelican, portrait in pink-purple predawn light, rests on sandstone seabluff. The characteristic mating plumage of the California race of brown pelican is shown, with red gular throat pouch and dark brown hindneck colors.
Image ID: 23646
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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Giant black sea bass, gathering in a mating - courtship aggregation amid kelp forest, Catalina Island.
Image ID: 33355
Species: Giant Black Sea Bass, Stereolepis gigas
Location: Catalina Island, California, USA | Adult male humpback whale singing, suspended motionless underwater. Only male humpbacks have been observed singing. All humpbacks in the North Pacific sing the same whale song each year, and the song changes slightly from one year to the next.
Image ID: 02796
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii, USA | Brown pelican portrait, displaying winter plumage with distinctive yellow head feathers and red gular throat pouch.
Image ID: 30255
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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A brown pelican preening, reaching with its beak to the uropygial gland (preen gland) near the base of its tail. Preen oil from the uropygial gland is spread by the pelican's beak and back of its head to all other feathers on the pelican, helping to keep them water resistant and dry.
Image ID: 30289
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | Western gulls, courtship behaviour.
Image ID: 18397
Species: Western gull, Larus occidentalis
Location: La Jolla, California, USA | Male elk bugling during the fall rut. Large male elk are known as bulls. Male elk have large antlers which are shed each year. Male elk engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females.
Image ID: 19697
Species: Elk, Cervus canadensis
Location: Madison River, Yellowstone National Park, Wyoming, USA |
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Male elk bugling during the fall rut. Large male elk are known as bulls. Male elk have large antlers which are shed each year. Male elk engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females.
Image ID: 19698
Species: Elk, Cervus canadensis
Location: Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA | Brown pelican portrait, displaying winter plumage with distinctive yellow head feathers and red gular throat pouch.
Image ID: 28332
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | 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.
Image ID: 25890
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California, USA |
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California brown pelican preening.
Image ID: 27261
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | Brown pelican preening, cleaning its feathers after foraging on the ocean, with distinctive winter breeding plumage with distinctive dark brown nape, yellow head feathers and red gular throat pouch.
Image ID: 22527
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | California Brown Pelican head throw, stretching its throat to keep it flexible and healthy.
Image ID: 30174
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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California Brown Pelican head throw, stretching its throat to keep it flexible and healthy. Note the winter mating plumage, olive and red throat, yellow head.
Image ID: 30327
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | California Brown Pelican head throw, stretching its throat to keep it flexible and healthy. Note the winter mating plumage, olive and red throat, yellow head.
Image ID: 30339
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | Brown pelican portrait, displaying winter breeding plumage with distinctive dark brown nape, yellow head feathers and red gular throat pouch.
Image ID: 22529
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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Brown pelican portrait, displaying winter plumage with distinctive yellow head feathers and red gular throat pouch.
Image ID: 28329
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | California brown pelican preening.
Image ID: 27262
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | Portrait of California brown pelican, with the characteristic winter mating plumage shown: red throat, yellow head and dark brown hindneck.
Image ID: 23647
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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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.
Image ID: 25878
Species: Roosevelt elk, Cervus canadensis roosevelti
Location: Redwood National Park, California, USA | Brown pelican, winter adult breeding plumage, showing bright red gular pouch and dark brown hindneck plumage of breeding adults. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Image ID: 20074
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA | Brown pelican, non-breeding winter plumage. This large seabird has a wingspan over 7 feet wide. The California race of the brown pelican holds endangered species status, due largely to predation in the early 1900s and to decades of poor reproduction caused by DDT poisoning.
Image ID: 20087
Species: Brown Pelican, Pelecanus occidentalis, Pelecanus occidentalis californicus
Location: La Jolla, California, USA |
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Male elephant seals (bulls) rear up on their foreflippers and fight in the surf for access for mating females that are in estrous. Such fighting among elephant seals can take place on the beach or in the water. They bite and tear at each other on the neck and shoulders, drawing blood and creating scars on the tough hides.
Image ID: 20369
Species: Elephant seal, Mirounga angustirostris
Location: Piedras Blancas, San Simeon, California, USA | Giant black sea bass, gathering in a mating - courtship aggregation amid kelp forest, Catalina Island.
Image ID: 33357
Species: Giant Black Sea Bass, Stereolepis gigas
Location: Catalina Island, California, USA | Giant black sea bass, gathering in a mating - courtship aggregation amid kelp forest, Catalina Island.
Image ID: 33359
Species: Giant Black Sea Bass, Stereolepis gigas
Location: Catalina Island, California, USA |
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