We continue to see salmon as we walk along the boardwalk.
The storyboard above told us how to identify a black bear. Black bears are the most abundant and widely distributed of North America's bears. The live in most parts of Southeast Alaska. An estimated 100,000 black bears live in Alaska. Black bears are generally black, but colors can range from cinnamon to white (Kermode bear), to a bluish-gray (glacier bear). Whatever the color, black bears are the smallest of North America's bears. An average-sized black bear stands about 29 inches at the shoulder and weighs about 200 pounds.
The black bear's main characteristics include: no shoulder hump; the rump is the highest point on the body; a straight face and large erect ears; and claws that are short and sharply curved, dark in color and rarely longer than 1-1/2 inches.
Although usually found in the forest, black bears follow their appetites from sea level to alpine areas. Like ravenous teenagers, they will eat just about anything they can find. Newly sprouted vegetation, like skunk cabbage, is important in the spring, while salmon and berries are critical in the summer and fall. Protein and fat-rich salmon help bears gain up to 20% of their average weight before they enter hibernation in the late fall. Deer fawns, ants, grubs, and other insects are additional sources of protein.
The storyboard above told us about brown bears or grizzlies. Is it a brown bear or grizzly? People generally call coastal bears "brown," while bears in the Interior of Alaska are called "grizzlies." Grizzlies often have dark brown fur, but various shades of brown are not uncommon. Grizzlies are larger and weigh more than black bears. Adult grizzlies at Fish Creek generally weigh 500-800 pounds.
The grizzly bear's main characteristics include: pronounced shoulder hump; dished in face and small rounded ears; and claws that are long and straight and light in color.
Roughly 35,000 grizzlies still roam Alaska. While populations are healthy in Alaska, polulations in the "lower 48" have decreased to less than 1,000 bears. Grizzlies depend on a wide range of habitat to meet their yearly needs. Keying into a dependable supply of protein, Fish Creek grizzlies will travel many miles from the surrounding forest to "fatten up" on spawning salmon. Sows with cubs, and young adults are the bears most commonly observed.
The above storyboard told us about the Salmon's Home & Its Life Cycle. A unique combination of geology and weather makes Fish Creek a perfect home for spawning salmon. Clear, spring-fed water and clean gravel are the keys to spawning success. In the Salmon River Valley, milky glacial sediment gives the water its special color.
Salmon are anadromous -- they depend on both fresh and salt water during their life history. Each year, salmon return to the freshwater streams of their birth to spawn and die. Chum, coho and pink salmon often spawn in small streams from the intertidal zone to creeks many miles inland. After spawning, the adult salmon die, but a new generation of salmon is born to continue the cycle.
So the cycle starts by the female digging a redd, or nest in the fresh water gravel. After the eggs are laid, the male fertilizes them. Eggs hatch during early spring. The tiny alevins live within the gravel while they absorb their yolk sac. After they absorb their yolk sacs, the young salmon emerge from the gravel and feed on tiny aquatic insects. After emerging from the gravel as tiny fry, chum and pink salmon migrate to the ocean rather than to freshwater lakes or streams. Emerging from the gravel, coho salmon will spend up to two years as juveniles in the stream before migrating to the ocean. There they gather in large schools and feed on plankton and tiny insects. Chum salmon spend three to five years in the ocean before returning to spawn, while pink salmon return in just two years.
Chum, coho and pink salmon are silver-colored before they enter freshwater as adults. After spawning, the adult salmon die, returning their nutrients to the Fish Creek ecosystem.
Above seagulls feed on the salmon -- they were not just eating the salmon but some were also feeding on the eggs.
The Fish Creek Wildlife Observation Site is an elevated 600-foot walkway where visitors can see bears forage through the creek, which features some of the largest chum salmon on the west coast.
Below Mel watches the salmon spawing in Fish Creek.
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