Grizzly bears are at
right place, right time
GRIZZLIES or North American brown bears arrive each year at cataracts on Canadaís major rivers like Mackenzie, where they wait for the salmon to pass through on their way to the redds in the headwaters. The salmon are plump and full of eggs and milt. Their struggles up the foaming waters, makes catching them easy for the bears. Some bears just open their mouths and the salmon, quite literally, jump right in.
Grizzly and the bald eagle are two of Americaís well-known animals that realise the importance of being at the right place at the right time and they plan their arrival to the movements of Pacific salmon, which like their relatives in other parts of the world, return to their home rivers to spawn. A clock could almost be set to their arrival, with different species of fish entering the rivers at different times of the year.
In July, the sockeye
salmon enter the rivers of Alaska and British Columbia. They
congregate in huge numbers in the estuaries, where they fall prey to
killer whales and seals, before making the perilous journey up-river
to the salmon redds at the head of the river, where they deposit their
eggs and milt. Waiting for them, along the river-bank, are not only
the nets and lines of fishermen and anglers, but also the massed claws
of countless grizzlies.
With a lightning swipe of the forepaw, a grizzly can hook a salmon as it leaps clear of the water or scoop one out of the shallows.. Some bears simply stand in the water at the top of the rapids and wait for the fish to, quite literally, jump into their mouth.
With the run complete and with full bellies, the bears head for the hills and for winter hibernation. The surviving salmon reach their spawning grounds, where many die, exhausted by the supreme effort of procreation some live on, returning to the sea, to spawn another day, but on the returnís journey their is another gauntlet to run.
In the pine trees bordering the Chilkat River,
large numbers of bald eagles begin to gather. They are on their migration south
to warmer climes, but they stop off for one last feast. In the river, dead,
dying and exhausted salmon are washed down-river, easy pickings for the
assembled predators. The eagles swoop in and snatch slamon from the shallows,
the wriggling fish impaled on the eagleís powerful talons. Bears, raccoons and
foxes join the easy hunt. It is the last of the summer food and a final
opportunity to stock up before winter.