Sixteen of the twenty largest brown bears killed by hunters have come from the Kodiak Archipelago. A large male can stand over 10 feet tall on his hind legs and 5 feet on all fours. A weight of 1, pounds was listed for one male in the Journal of Mammalogy.
Females are about 20 percent smaller and 30 percent lighter than males. The 3 subspecies of brown bear that live in North America are Kodiak bears, coastal brown bears Ursus arctos gyas , and grizzly bears Ursus arctos horribilis. In captivity, Kodiak bears can become even heavier than in the wild.
Named Clyde, he weighed pounds when he died in June at the age of There are about 3, Kodiak bears; a density of about 0. Kodiak bear populations are healthy and productive.
They enjoy relatively pristine habitat and well managed fish populations. In most areas the number of bears is stable, but there are some places where bear density is increasing. Male bears are called boars, females are sows, and youngsters are cubs. Kodiak bears are the largest bears in the world.
A large male can stand over 10' tall when on his hind legs, and 5' when on all four legs. They weigh up to 1, pounds. The oldest known wild Kodiak bear was a year-old sow. The oldest boar was Cubs are born in the den during January or February.
Weighing less than a pound at birth with little hair and closed eyes, they suckle for several months, emerging from the den in May or June, weighing pounds.
Typical litter sizes are cubs. Sows are sometimes seen with 5 or 6 cubs in tow, probably due to adopting cubs from other litters. Most cubs stay with their mothers for 3 years. Bears that have recently left their mothers, at ages , have a high mortality rate as they face the world on their own. Kodiak bears become sexually mature at age 5 and can continue to produce cubs throughout their lives.
The average interval between litters is about 4 years. Kodiak bears begin entering their dens in late October. Pregnant sows are the first to go to dens, males are the last. Males begin emerging from their dens in early April, while sows with new cubs may stay in dens until late June.
The geographic differences between these two subspecies has also led to differences in size. Generally Kodiak bears have a larger bone structure, and therefore larger frames than grizzly bears, though both species can reach very large sizes.
Kodiak bears are among the largest of all bears averaging slightly smaller than polar bears , and males can reach weights of up to 1, pounds and are able to stand up to 10 feet tall when on their hind legs. Grizzly bears can weigh up to 1, pounds.
Among the other distinguishing factors that can occur when two members of the same species are isolated from one another for long periods of time are differences in behavior and social structure.
Kodiak bears' home range is able to support a higher population density of bears, due to plentiful food sources. Because of this, Kodiak bears have developed more complex social structures and communication to allow them to live together with minimal conflict.
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